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  1. Gilles Doumy, C. Roedig, Sang-Kil Son, C. I. Blaga, A. D. DiChiara, Robin Santra, N. Berrah, C. Bostedt, J. D. Bozek, P. H. Bucksbaum, J. P. Cryan, L. Fang, S. Ghimire, J. M. Glownia, M. Hoener, E. P. Kanter, B. Krässig, M. Kuebel, M. Messerschmidt, G. G. Paulus, D. A. Reis, N. Rohringer, L. Young, P. Agostini, and L. F. DiMauro, Nonlinear atomic response to intense ultrashort x rays, Phys. Rev. Lett. 106, 083002 (2011) [bib][BibTeX][pdf][pdf][abstract][abstract][link]doi:10.1103/PhysRevLett.106.083002
  2. Gilles Doumy, C. Roedig, Sang-Kil Son, C. I. Blaga, A. D. DiChiara, Robin Santra, N. Berrah, C. Bostedt, J. D. Bozek, P. H. Bucksbaum, J. P. Cryan, L. Fang, S. Ghimire, J. M. Glownia, M. Hoener, E. P. Kanter, B. Krässig, M. Messerschmidt, D. A. Reis, N. Rohringer, L. Young, P. Agostini, and L. F. DiMauro, Nonlinear atomic response to ultraintense and ultrashort x-ray pulses in 75th Annual Meeting of the DPG and DPG Spring Meeting of the Section AMOP (German Physical Society, Dresden, Germany, March 13-18, 2011) [oral presentation] [bib][BibTeX][slide][slide: 3Mb][abstract][abstract][link][link]
  3. Christoph Roedig, Gilles Doumy, Sang-Kil Son, C. I. Blaga, Anthony DiChiara, R. Santra, N. Berrah, C. Bosteadt, J. D. Bozek, Philip H. Bucksbaum, J. P. Cryan, L. Fang, S. Ghimire, J. M. Glownia, M. Hoener, E. P. Kanter, B. Krassig, M. Kuebel, M. Messerschmidt, G. Paulus, David A. Reis, Nina Rohringer, L. Young, Pierre Agostini, and Lou DiMauro, Multi Photon Physics at the LCLS in Frontiers in Optics / Laser Science XXVII (San Jose, California, 16-20 October, 2011) [bib][BibTeX][abstract][abstract][link]doi:10.1364/LS.2011.LThE1
  4. Sang-Kil Son, Linda Young, and Robin Santra, Impact of hollow-atom formation on coherent x-ray scattering at high intensity, Phys. Rev. A 83, 033402 (2011) [bib][BibTeX][pdf][pdf][abstract][abstract][link]doi:10.1103/PhysRevA.83.033402
  5. Sang-Kil Son, Linda Young, and Robin Santra, Impact of hollow-atom formation on coherent x-ray scattering at high intensity in European XFEL and HASYLAB Users' Meeting (DESY, Hamburg, Germany, January 26-28, 2011) [poster] [bib][BibTeX][poster][poster: 2Mb][abstract][abstract][link][link]
  6. Sang-Kil Son, Linda Young, and Robin Santra, Impact of hollow-atom formation on coherent x-ray scattering at high intensity in 75th Annual Meeting of the DPG and DPG Spring Meeting (German Physical Society, Dresden, Germany, March 13-18, 2011) [poster] [bib][BibTeX][abstract][abstract][link][link]
  7. Sang-Kil Son and Robin Santra, XATOM: an integrated toolkit for X-ray and atomic physics in 1st CFEL Symposium 2011 (CFEL, Sylt, Germany, March 18-20, 2011) [poster] [bib][BibTeX][poster][poster: 3Mb][abstract][abstract]
  8. Sang-Kil Son, Henry N. Chapman, and Robin Santra, Multiwavelength anomalous diffraction at high x-ray intensity, Phys. Rev. Lett. 107, 218102 (2011) [bib][BibTeX][pdf][pdf][abstract][abstract][link]doi:10.1103/PhysRevLett.107.218102
  9. Sang-Kil Son and Robin Santra, XATOM: an integrated toolkit for X-ray and atomic physics in The 17th International Conference on Atomic Processes in Plasmas (Queen's University, Belfast, United Kingdom, July 19-22, 2011) [poster] [bib][BibTeX][pdf][pdf][poster][poster: 4Mb][abstract][abstract][link][link]
  10. Sang-Kil Son, Henry N. Chapman, and Robin Santra, Multi-wavelength anomalous diffraction phasing method at high intensity in New Science Opportunities at FLASH (DESY, Hamburg, Germany, October 12-14, 2011) [oral presentation] [bib][BibTeX][pdf][pdf][slide][slide: 8Mb][abstract][abstract][link][link]
  11. Siddharth Bhardwaj, Sang-Kil Son, Robin Santra, and Franz X. Kärtner, Recombination amplitude calculation for noble gases beyond strong field approximation in length and acceleration forms in CLEO (San Jose, California, May 6-11, 2012) [bib][BibTeX][link][link]
  12. R. W. Dunford, S. H. Southworth, D. Ray, E. P. Kanter, B. Krässig, L. Young, D. A. Arms, E. M. Dufresne, D. A. Walko, O. Vendrell, Sang-Kil Son, and R. Santra, Evidence for interatomic Coulombic decay in Xe K-shell-vacancy decay of XeF2, Phys. Rev. A 86, 033401 (2012) [bib][BibTeX][pdf][pdf][abstract][abstract][link]doi:10.1103/PhysRevA.86.033401
  13. D. Ray, R. W. Dunford, S. H. Southworth, E. P. Kanter, B. Krässig, L. Young, D. A. Arms, E. M. Dufresne, D. A. Walko, O. Vendrell, Sang-Kil Son, and R. Santra, Interatomic Coulombic Decay (ICD) in deep inner-shell vacancy cascades in The 43rd Meeting of the Division of Atomic, Molecular and Optical Physics (American Physics Society, Orange County, California, June 4-8, 2012) [bib][BibTeX][abstract][abstract][link][link]
  14. Benedikt Rudek, Sang-Kil Son, Lutz Foucar, Sascha W. Epp, Benjamin Erk, Robert Hartmann, Marcus Adolph, Robert Andritschke, Andrew Aquila, Nora Berrah, Christoph Bostedt, John Bozek, Nicola Coppola, Frank Filsinger, Hubert Gorke, Tais Gorkhover, Heinz Graafsma, Lars Gumprecht, Andreas Hartmann, Günter Hauser, Sven Herrmann, Helmut Hirsemann, Peter Holl, André Hömke, Loic Journel, Christian Kaiser, Nils Kimmel, Faton Krasniqi, Kai-Uwe Kühnel, Michael Matysek, Marc Messerschmidt, Danilo Miesner, Thomas Möller, Robert Moshammer, Kiyonobu Nagaya, Björn Nilsson, Guillaume Potdevin, Daniel Pietschner, Christian Reich, Daniela Rupp, Gerhard Schaller, Ilme Schlichting, Carlo Schmidt, Florian Schopper, Sebastian Schorb, Claus-Dieter Schröter, Joachim Schulz, Marc Simon, Heike Soltau, Lothar Strüder, Kiyoshi Ueda, Georg Weidenspointner, Robin Santra, Joachim Ullrich, Artem Rudenko, and Daniel Rolles, Ultra-efficient ionization of heavy atoms by intense x-ray free-electron laser pulses, Nat. Photon. 6, 858–865 (2012) [bib][BibTeX][abstract][abstract][link]doi:10.1038/nphoton.2012.261
  15. Sang-Kil Son, Electronic response to X-ray free-electron laser pulses in The 3rd CQSE International Workshop on Atomic, Molecular, and Ultrafast Science and Technology (National Taiwan University, Taipei, Taiwan, January 7-8, 2012) [invited talk] [bib][BibTeX][pdf][pdf][slide][slide: 8Mb][abstract][abstract][link][link]
  16. Sang-Kil Son and Robin Santra, XATOM: an integrated toolkit for X-ray and atomic physics in The 3rd CQSE International Workshop on Atomic, Molecular, and Ultrafast Science and Technology (National Taiwan University, Taipei, Taiwan, January 7-8, 2012) [poster] [bib][BibTeX][poster][poster: 4Mb][abstract][abstract][link][link]
  17. Sang-Kil Son, Henry N. Chapman, and Robin Santra, Multiwavelength anomalous diffraction at high x-ray intensity in European XFEL and HASYLAB Users' Meeting (DESY, Hamburg, Germany, January 25-27, 2012) [poster] [bib][BibTeX][poster][poster: 4Mb][abstract][abstract][link][link]
  18. Sang-Kil Son and Robin Santra, XATOM: an integrated toolkit for X-ray and atomic physics in Photoions, Photoionization and Photodetachment (Gordon Research Conference, Galveston, Texas, US, February 12-17, 2012) [poster] [bib][BibTeX][abstract][abstract][link][link]
  19. Sang-Kil Son, Henry N. Chapman, and Robin Santra, Multiwavelength anomalous diffraction at high x-ray intensity in DPG Spring Meeting of the Section AMOP (German Physical Society, Stuttgart, Germany, March 12-16, 2012) [oral presentation] [bib][BibTeX][slide][slide: 4Mb][abstract][abstract][link][link]
  20. Sang-Kil Son, Henry N. Chapman, and Robin Santra, Multiwavelength anomalous diffraction at high x-ray intensity in Science at FELs (DESY, Hamburg, Germany, July 15-18, 2012) [poster] [bib][BibTeX][pdf][pdf][abstract][abstract][link][link]
  21. Sang-Kil Son and Robin Santra, Monte Carlo calculation of ion, electron, and photon spectra of xenon atoms in x-ray free-electron laser pulses, Phys. Rev. A 85, 063415 (2012) [bib][BibTeX][pdf][pdf][abstract][abstract][link]doi:10.1103/PhysRevA.85.063415
  22. Sang-Kil Son, Henry N. Chapman, and Robin Santra, Multiwavelength anomalous diffraction at high x-ray intensity in Ultrafast Dynamic Imaging of Matter (Banff, Canada, July 1-3, 2012) [oral presentation] [bib][BibTeX][pdf][pdf][slide][slide: 6Mb][abstract][abstract][link][link]
  23. Sang-Kil Son, Multiwavelength anomalous diffraction phasing method at high x-ray intensity in The 24th PLS Synchrotron Radiation Users' Workshop (POSTECH, Pohang, Korea, November 22, 2012) [invited talk] [bib][BibTeX][slide][slide: 7Mb][abstract][abstract][link][link]
  24. Sang-Kil Son, Electronic response to X-ray free-electron laser pulses in MPC-AS seminar (Max Planck Center for Attosecond Science, POSTECH, Pohang, Korea, November 23, 2012) [oral presentation] [bib][BibTeX][slide][slide: 9Mb][abstract][abstract][link][link]
  25. Arina Sytcheva, Stefan Pabst, Sang-Kil Son, and Robin Santra, Enhanced nonlinear response of Ne8+ to intense ultrafast x rays, Phys. Rev. A 85, 023414 (2012) [bib][BibTeX][pdf][pdf][abstract][abstract][link]doi:10.1103/PhysRevA.85.023414
  26. Robert Thiele, Sang-Kil Son, Beata Ziaja, and Robin Santra, Effect of screening by external charges on the atomic orbitals and photoinduced processes within the Hartree-Fock-Slater atom, Phys. Rev. A 86, 033411 (2012) [bib][BibTeX][pdf][pdf][abstract][abstract][link]doi:10.1103/PhysRevA.86.033411
  27. Siddharth Bhardwaj, Sang-Kil Son, Kyung-Han Hong, Chien-Jen Lai, Franz X. Kärtner, and Robin Santra, Recombination-amplitude calculations of noble gases, in both length and acceleration forms, beyond the strong-field approximation, Phys. Rev. A 88, 053405 (2013) [bib][BibTeX][pdf][pdf][abstract][abstract][link]doi:10.1103/PhysRevA.88.053405
  28. H. Fukuzawa, Sang-Kil Son, K. Motomura, S. Mondal, K. Nagaya, S. Wada, X. -J. Liu, R. Feifel, T. Tachibana, Y. Ito, M. Kimura, T. Sakai, K. Matsunami, H. Hayashita, J. Kajikawa, P. Johnsson, M. Siano, E. Kukk, B. Rudek, B. Erk, L. Foucar, E. Robert, C. Miron, K. Tono, Y. Inubushi, T. Hatsui, M. Yabashi, M. Yao, R. Santra, and K. Ueda, Deep inner-shell multiphoton ionization by intense x-ray free-electron laser pulses, Phys. Rev. Lett. 110, 173005 (2013) [bib][BibTeX][pdf][pdf][abstract][abstract][link]doi:10.1103/PhysRevLett.110.173005
  29. H. Fukuzawa, K. Motomura, Sang-Kil Son, S. Mondal, T. Tachibana, Y. Ito, M. Kimura, K. Nagaya, T. Sakai, K. Matsunami, S. Wada, H. Hayashita, J. Kajikawa, X. -J. Liu, R. Feifel, P. Johnsson, M. Siano, E. Kukk, B. Rudek, B. Erk, L. Foucar, E. Robert, C. Miron, K. Tono, Y. Inubushi, T. Hatsui, M. Yabashi, M. Yao, R. Santra, and K. Ueda, Sequential multiphoton multiple ionization of Ar and Xe by X-ray free electron laser pulses at SACLA in XXVIII International Conference on Photonic, Electronic and Atomic Collisions (Lanzhou, China, July 24-30, 2013) [bib][BibTeX][pdf][pdf][abstract][abstract][link][link][link]doi:10.1088/1742-6596/488/3/032034
  30. K. Motomura, H. Fukuzawa, Sang-Kil Son, S. Mondal, T. Tachibana, Y. Ito, M. Kimura, K. Nagaya, T. Sakai, K. Matsunami, S. Wada, H. Hayashita, J. Kajikawa, X. -J. Liu, R. Feifel, P. Johnsson, M. Siano, E. Kukk, B. Rudek, B. Erk, L. Foucar, E. Robert, C. Miron, K. Tono, Y. Inubushi, T. Hatsui, M. Yabashi, M. Yao, R. Santra, and K. Ueda, Sequential multiphoton multiple ionization of atomic argon and xenon irradiated by x-ray free-electron laser pulses at SACLA, J. Phys. B: At. Mol. Opt. Phys. 46, 164024 (2013) [special issue on frontiers of free-electron laser science] [bib][BibTeX][abstract][abstract][link]doi:10.1088/0953-4075/46/16/164024
  31. L. Müller, C. Gutt, B. Pfau, S. Schaffert, J. Geilhufe, F. Büttner, J. Mohanty, S. Flewett, R. Treusch, S. Düsterer, H. Redlin, A. Al-Shemmary, M. Hille, A. Kobs, R. Frömter, H. P. Oepen, B. Ziaja, N. Medvedev, Sang-Kil Son, R. Thiele, R. Santra, W. Schlotter, B. Vodungbo, J. Lüning, S. Eisebitt, and G. Grübel, Breakdown of the x-ray resonant magnetic scattering signal during intense pulses of extreme ultraviolet free-electron-laser radiation, Phys. Rev. Lett. 110, 234801 (2013) [bib][BibTeX][pdf][pdf][abstract][abstract][link]doi:10.1103/PhysRevLett.110.234801
  32. Benedikt Rudek, Daniel Rolles, Sang-Kil Son, Lutz Foucar, Benjamin Erk, Sascha Epp, Rebecca Boll, Denis Anielski, Christoph Bostedt, Sebastian Schorb, Ryan Coffee, John Bozek, Sebastian Trippel, Tatiana Marchenko, Marc Simon, Lauge Christensen, Sankar De, Shin-ichi Wada, Kiyoshi Ueda, Ilme Schlichting, Robin Santra, Joachim Ullrich, and Artem Rudenko, Resonance-enhanced multiple ionization of krypton at an x-ray free-electron laser, Phys. Rev. A 87, 023413 (2013) [bib][BibTeX][pdf][pdf][abstract][abstract][link]doi:10.1103/PhysRevA.87.023413
  33. Sang-Kil Son, Henry N. Chapman, and Robin Santra, Determination of multiwavelength anomalous diffraction coefficients at high x-ray intensity, J. Phys. B: At. Mol. Opt. Phys. 46, 164015 (2013) [special issue on frontiers of free-electron laser science] [bib][BibTeX][pdf][pdf][abstract][abstract][link][link][link]doi:10.1088/0953-4075/46/16/164015
  34. Sang-Kil Son and Robin Santra, Inner-shell multiphoton multiple ionization dynamics of xenon atoms by x-ray free-electron laser pulses in DPG Spring Meeting of the Section AMOP (German Physical Society, Hanover, Germany, March 18-22, 2013) [oral presentation] [bib][BibTeX][slide][slide: 4Mb][abstract][abstract][link][link]
  35. Sang-Kil Son, Multiwavelength anomalous diffraction at high x-ray intensity in Workshop on Resonant Elastic X-ray Scattering in Condensed Matter (Oxford, United Kingdom, July 15-19, 2013) [invited talk] [bib][BibTeX][pdf][pdf][slide][slide: 9Mb][abstract][abstract][link][link]
  36. Sang-Kil Son and Robin Santra, XATOM: an integrated toolkit for X-ray and atomic physics in 3rd CFEL Symposium 2013 (CFEL, Timmendorfer Strand, Germany, October 1-3, 2013) [poster] [bib][BibTeX][poster][poster: 5Mb][abstract][abstract]
  37. Sang-Kil Son and Robin Santra, XATOM: an integrated toolkit for X-ray and atomic physics in The Hamburg Centre for Ultrafast Imaging International Symposium 2013 (CUI, Hamburg, Germany, November 13-15, 2013) [poster] [bib][BibTeX][abstract][abstract][link][link]
  38. Robert Thiele, Sang-Kil Son, Beata Ziaja-Motyka, and Robin Santra, Effect of screening by external charges on the atomic orbitals and photoinduced processes within the Hartree-Fock-Slater approach in 33rd International Workshop on Physics of High Energy Density in Matter (Hirschegg, Austria, January 13-18, 2013) [bib][BibTeX][link][link]
  39. Beata Ziaja, Zoltan Jurek, Nikita Medvedev, Sang-Kil Son, Robert Thiele, and Sven Toleikis, Photoelectron spectroscopy method to reveal ionization potential lowering in nanoplasmas, J. Phys. B: At. Mol. Opt. Phys. 46, 164009 (2013) [special issue on frontiers of free-electron laser science] [bib][BibTeX][abstract][abstract][link]doi:10.1088/0953-4075/46/16/164009
  40. Beata Ziaja, Zoltan Jurek, Nikita Medvedev, Sang-Kil Son, Robert Thiele, and Robin Santra, Transitions in matter triggered by intense ultrashort X-ray pulses in 55th Annual Meeting of the APS Division of Plasma Physics (American Physical Society, Denver, Colorado, November 11-15, 2013) [bib][BibTeX][abstract][abstract][link][link]
  41. Hironobu Fukuzawa, Koji Motomura, Tetsuya Tachibana, Zoltan Jurek, Sang-Kil Son, Per Johnsson, Kiyonobu Nagaya, Marco Siano, Shin-ichi Wada, Subhindu Mondal, Mike Kimura, Yuga Ito, Tsukasa Sakai, Kenji Matsunami, Hironori Hayashita, Jumpei Kajikawa, XiaoJing Liu, Emmanuel Robert, Catalin Miron, Raimund Feifel, Edwin Kukk, Benedikt Rudek, Benjamin Erk, Lutz Foutar, Jonathan P. Marangos, Kensake Tono, Yuchi Inubushi, Takaki Matsui, Makina Yabashi, Beata Ziaja, Robin Santra, Makoto Yao, and Kiyoshi Ueda, Multiphoton Multiple Ionization of Rare-Gas Atoms and Clusters by X-Ray Free-Electron Laser Pulses from SACLA in 19th International Conference on Ultrafast Phenomena (Okinawa, Japan, July 7-11, 2014) [bib][BibTeX][abstract][abstract][link]doi:10.1364/UP.2014.09.Wed.P3.3
  42. Brendan Murphy, Timur Osipov, Zoltan Jurek, Li Fang, Sang-Kil Son, Melanie Mucke, John H.D. Eland, Vitali Zhaunerchyk, Raimund Feifel, Lorenzo Avaldi, Paola Bolognesi, Christoph Bostedt, J. D. Bozek, Jakob Grilj, Markus Guehr, Leszek J. Frasinski, James Glownia, Dang Trinh Ha, Kay Hoffmann, Edwin Kukk, Brian K. McFarland, Catalin Miron, Emily Sistrunk, Richard J. Squibb, Kiyoshi Ueda, Robin Santra, and Nora Berrah, Femtosecond x-ray-induced explosion of C60 at extreme intensity, Nat. Commun. 5, 4281 (2014) [bib][BibTeX][pdf][pdf][abstract][abstract][link]doi:10.1038/ncomms5281
  43. Vikrant Saxena, Zoltan Jurek, Sang-Kil Son, Beata Ziaja, and Robin Santra, Large-Scale Simulations of Laser-Cluster Interactions in DPG Spring Meeting of the Section AMOP (German Physical Society, Berlin, Germany, March 17-21, 2014) [bib][BibTeX][abstract][abstract][link][link]
  44. Jan Malte Slowik, Sang-Kil Son, Gopal Dixit, Zoltan Jurek, and Robin Santra, Incoherent x-ray scattering in single molecule imaging, New J. Phys. 16, 073042 (2014) [bib][BibTeX][pdf][pdf][abstract][abstract][link]doi:10.1088/1367-2630/16/7/073042
  45. Jan Malte Slowik, Gopal Dixit, Sang-Kil Son, and Robin Santra, Inelastic X-ray Scattering in Single Molecule Imaging with Free-Electron Lasers in DPG Spring Meeting of the Section AMOP (German Physical Society, Berlin, Germany, March 17-21, 2014) [bib][BibTeX][abstract][abstract][link][link]
  46. Sang-Kil Son, Robert Thiele, Zoltan Jurek, Beata Ziaja, and Robin Santra, Quantum-mechanical calculation of ionization-potential lowering in dense plasmas in European XFEL and DESY Photon Science Users' Meeting (DESY, Hamburg, Germany, January 29-31, 2014) [poster] [bib][BibTeX][poster][poster: 2Mb][abstract][abstract][link][link]
  47. Sang-Kil Son, Turning photoionization at high x-ray intensity into an advantage for femtosecond nanocrystallography in Photoionization and Photodetachment (Gordon Research Conference, Galveston, Texas, United States, February 23-28, 2014) [invited talk] [bib][BibTeX][link][link]
  48. Sang-Kil Son, Happy phasing with electronic radiation damage at high x-ray intensity in 8th International Workshop on X-ray Radiation Damage to Biological Crystalline Samples (Hamburg, Germany, April 10-12, 2014) [invited talk] [bib][BibTeX][slide][slide: 5Mb][abstract][abstract][link][link]
  49. Sang-Kil Son, Robert Thiele, Zoltan Jurek, Beata Ziaja, and Robin Santra, Quantum-mechanical calculation of ionization potential lowering in dense plasmas, Phys. Rev. X 4, 031004 (2014) [bib][BibTeX][pdf][pdf][abstract][abstract][link]doi:10.1103/PhysRevX.4.031004
  50. Sang-Kil Son, Robert Thiele, Zoltan Jurek, Beata Ziaja, and Robin Santra, Quantum-mechanical calculation of ionization potential lowering in dense plasmas in Radiative Properties of Hot Dense Matter (Vienna, Austria, September 29-October 3, 2014) [oral presentation] [bib][BibTeX][slide][slide: 4Mb][abstract][abstract][link][link]
  51. Malik Muhammad Abdullah, Zoltan Jurek, Sang-Kil Son, and Robin Santra, Spatial beam profile-induced effects in x-ray scattering pattern at high intensity in XXIX International Conference on Photonic, Electronic and Atomic Collisions (Toledo, Spain, July 22-28, 2015) [bib][BibTeX][pdf][pdf][abstract][abstract][link]doi:10.1088/1742-6596/635/10/102008
  52. Lorenzo Galli, Sang-Kil Son, Thomas A. White, Robin Santra, Henry N. Chapman, and Max H. Nanao, Towards RIP using free electron laser SFX data, J. Synchrotron Radiat. 22, 249–255 (2015) [bib][BibTeX][abstract][abstract][link]doi:10.1107/S1600577514027854
  53. Lorenzo Galli, Sang-Kil Son, M. Klinge, S. Bajt, A. Barty, R. Bean, C. Betzel, K. R. Beyerlein, C. Caleman, R. B. Doak, M. Duszenko, H. Fleckenstein, C. Gati, B. Hunt, R. A. Kirian, M. Liang, M. H. Nanao, K. Nass, D. Oberthür, L. Redecke, R. Shoeman, F. Stellato, C. H. Yoon, T. A. White, O. Yefanov, J. Spence, and H. N. Chapman, Electronic damage in S atoms in a native protein crystal induced by an intense x-ray free-electron laser pulse, Struct. Dyn. 2, 041703 (2015) [special issue on biology with x-ray lasers 2] [bib][BibTeX][pdf][pdf][abstract][abstract][link]doi:10.1063/1.4919398
  54. Lorenzo Galli, Sang-Kil Son, Thomas R.M. Barends, Thomas A. White, Anton Barty, Sabine Botha, Sébastien Boutet, Carl Caleman, Bruce R. Doak, Max H. Nanao, Karol Nass, Robert L. Schoeman, Nicusor Timneanu, Robin Santra, Ilme Schlichting, and Henry N. Chapman, Towards phasing using high x-ray intensity, IUCrJ 2, 627–634 (2015) [bib][BibTeX][pdf][pdf][abstract][abstract][link]doi:10.1107/S2052252515014049
  55. Kota Hanasaki, Oriol Vendrell, Sang-Kil Son, Ludger Inhester, Yajiang Hao, and Robin Santra, Formulation of non-adiabatic molecular dynamics triggered by core ionization in The Hamburg Conference on Femtochemistry (Hamburg, Germany, July 12-17, 2015) [bib][BibTeX][abstract][abstract][link][link]
  56. Yajiang Hao, Ludger Inhester, Kota Hanasaki, Sang-Kil Son, and Robin Santra, Efficient electronic structure calculation for molecular ionization dynamics at high x-ray intensity, Struct. Dyn. 2, 041707 (2015) [special issue on biology with x-ray lasers 2] [bib][BibTeX][pdf][pdf][abstract][abstract][link]doi:10.1063/1.4919794
  57. Yajiang Hao, Ludger Inhester, Sang-Kil Son, and Robin Santra, Electronic structure calculations of multiple core hole states in molecules in DPG Spring Meeting of the Section AMOP (German Physical Society, Heidelberg, Germany, March 23-27, 2015) [bib][BibTeX][abstract][abstract][link][link]
  58. Sang-Kil Son, High-intensity phasing with x-ray free-electron lasers in CCP4 Study Weekend (Nottingham, United Kingdom, January 7-9, 2015) [invited talk] [bib][BibTeX][slide][slide: 5Mb][abstract][abstract][link][link]
  59. Sang-Kil Son, Phasing with electronic radiation damage at high x-ray intensity in BioXFEL STC 2nd Annual International Conference (Ponce, Puerto Rico, January 14-16, 2015) [invited talk] [bib][BibTeX][slide][slide: 6Mb][abstract][abstract][link][link]
  60. Sang-Kil Son, Lorenzo Galli, Henry N. Chapman, and Robin Santra, High-intensity phasing 
with x-ray free-electron lasers in European XFEL and DESY Photon Science Users' Meeting (DESY, Hamburg, Germany, January 28-30, 2015) [poster] [bib][BibTeX][poster][poster: 4Mb][abstract][abstract][link][link]
  61. Sang-Kil Son, Multiphoton multiple ionization dynamics of atoms and molecules at high x-ray intensity in International Workshop on Intense-field Short-wavelength Atomic and Molecular Processes (Hamburg, Germany, July 18-20, 2015) [invited talk] [bib][BibTeX][slide][slide: 4Mb][abstract][abstract][link][link]
  62. Sang-Kil Son, What happens to molecules at high x-ray intensity? in 4th CFEL Symposium 2015 (CFEL, Timmendorfer Strand, Germany, September 30-October 2, 2015) [oral presentation] [bib][BibTeX]
  63. Sang-Kil Son, What happens to atoms and molecules during x-ray free-electron laser pulses? in Seminar on Dynamical Aspects of Theoretical Chemistry (Department of Chemistry, Free University of Berlin, Berlin, Germany, November 19, 2015) [invited talk] [bib][BibTeX][slide][slide: 9Mb][abstract][abstract]
  64. Sang-Kil Son, What happens to atoms and molecules during x-ray free-electron laser pulses? in Physical Colloquium (Institute of Physics, University of Kassel, Kassel, Germany, December 3, 2015) [invited talk] [bib][BibTeX][pdf][pdf][slide][slide: 9Mb][abstract][abstract]
  65. Tetsuya Tachibana, Zoltan Jurek, Hironobu Fukuzawa, Koji Motomura, Kiyonobu Nagaya, Shin-ichi Wada, Per Johnsson, Marco Siano, S. Mondal, Yuta Ito, M. Kimura, T. Sakai, K. Matsunami, H. Hayashita, J. Kajikawa, Xiao-Jing Liu, E. Robert, Catalin Miron, Raimund Feifel, John P. Marangos, Kensuke Tono, Yuichi Inubushi, Makina Yabashi, Sang-Kil Son, Beata Ziaja, Makoto Yao, Robin Santra, and Kiyoshi Ueda, Nanoplasma formation by high intensity hard x-rays, Sci. Rep. 5, 10977 (2015) [bib][BibTeX][pdf][pdf][abstract][abstract][link]doi:10.1038/srep10977
  66. Beata Ziaja, Zoltan Jurek, Nikita Medvedev, Vikrant Saxena, Sang-Kil Son, and Robin Santra, Towards realistic simulations of macromolecules irradiated under the conditions of coherent diffraction imaging with an x-ray free-electron laser, Photonics 2, 256–269 (2015) [bib][BibTeX][pdf][pdf][abstract][abstract][link]doi:10.3390/photonics2010256
  67. Malik Muhammad Abdullah, Zoltan Jurek, Sang-Kil Son, and Robin Santra, Calculation of x-ray scattering patterns from nanocrystals at high x-ray intensity, Struct. Dyn. 3, 054101 (2016) [bib][BibTeX][pdf][pdf][abstract][abstract][link]doi:10.1063/1.4958887
  68. Ludger Inhester, Kota Hanasaki, Yajiang Hao, Sang-Kil Son, and Robin Santra, X-ray multiphoton ionization dynamics of a water molecule irradiated by an x-ray free-electron laser pulse, Phys. Rev. A 94, 023422 (2016) [bib][BibTeX][pdf][pdf][abstract][abstract][link]doi:10.1103/PhysRevA.94.023422
  69. Ludger Inhester, Kota Hanasaki, Oriol Vendrell, Sang-Kil Son, and Robin Santra, Ionization and fragmentation dynamics of molecules at high x-ray intensity in DPG Spring Meeting of the Section AMOP (German Physical Society, Hanover, Germany, February 29-March 4, 2016) [bib][BibTeX][abstract][abstract][link][link]
  70. Zoltan Jurek, Sang-Kil Son, Beata Ziaja, and Robin Santra, XMDYN and XATOM: versatile simulation tools for quantitative modeling of X-ray free-electron laser induced dynamics of matter, J. Appl. Cryst. 49, 1048–1056 (2016) [special issue on free-electron laser software] [bib][BibTeX][abstract][abstract][link]doi:10.1107/S1600576716006014
  71. Sang-Kil Son, Ultrafast ionization and fragmentation dynamics of molecules at high x-ray intensity in The 47th Meeting of the Division of Atomic, Molecular and Optical Physics (American Physics Society, Providence, Rhode Island, United States, May 23-27, 2016) [invited talk] [bib][BibTeX][slide][slide: 4Mb][abstract][abstract][link][link]
  72. Sang-Kil Son, Electronic structure at high x-ray intensity in The electronic-structure problem in theoretical strong-field physics (ITAMP, Harvard University, Cambridge, Massachusetts, United States, October 10-14, 2016) [invited talk] [bib][BibTeX][slide][slide: 12Mb][link][link]
  73. Sang-Kil Son, What happens to atoms and molecules during x-ray free-electron laser pulses? in Physics and Photon Science Colloquium (Department of Physics and Photon Science, GIST, Gwangju, Korea, October 18, 2016) [invited talk] [bib][BibTeX][pdf][pdf][slide][slide: 11Mb][abstract][abstract][link][link]
  74. Sang-Kil Son, Ultrafast ionization and fragmentation dynamics of molecules at high x-ray intensity in Korean Physical Society Fall Meeting (Korean Physical Society, Gwangju, Korea, October 19-21, 2016) [invited talk] [bib][BibTeX][slide][slide: 5Mb][abstract][abstract][link][link]
  75. Sang-Kil Son, A new computational tool for describing the behavior of molecules in high-intensity x-ray fields in Workshop on Science of “From Matter to Materials and Life” (Hamburg, Germany, December 14-16, 2016) [oral presentation] [bib][BibTeX][abstract][abstract][link][link]
  76. Koudai Toyota, Sang-Kil Son, and Robin Santra, Relativistic effect on x-ray multiphoton ionization dynamics of xenon atoms in DPG Spring Meeting of the Section AMOP (German Physical Society, Hanover, Germany, February 29-March 4, 2016) [bib][BibTeX][abstract][abstract][link][link]
  77. Beata Ziaja, Vikrant Saxena, Sang-Kil Son, Nikita Medvedev, Benjamin Barbrel, Bianca Woloncewicz, and Michal Stransky, Kinetic Boltzmann approach adapted for modeling highly ionized matter created by x-ray irradiation of a solid, Phys. Rev. E 93, 053210 (2016) [bib][BibTeX][pdf][pdf][abstract][abstract][link]doi:10.1103/PhysRevE.93.053210
  78. Beata Ziaja, Vikrant Saxena, Sang-Kil Son, Nikita Medvedev, Michal Stransky, Bianka Woloncewicz, and Benjamin Barbrel, Kinetic simulations of core-hole relaxation in bulk material irradiated by hard x-rays in DPG Spring Meeting of the Section AMOP (German Physical Society, Hanover, Germany, February 29-March 4, 2016) [bib][BibTeX][abstract][abstract][link][link]
  79. Malik Muhammad Abdullah, Anurag, Zoltan Jurek, Sang-Kil Son, and Robin Santra, Molecular-dynamics approach for studying the nonequilibrium behavior of x-ray-heated solid-density matter, Phys. Rev. E 96, 023205 (2017) [bib][BibTeX][pdf][pdf][abstract][abstract][link]doi:10.1103/PhysRevE.96.023205
  80. Ludger Inhester, Sang-Kil Son, and Robin Santra, Site-selective x-ray photofragmentation of molecules in DPG Spring Meeting of the Section AMOP (German Physical Society, Mainz, Germany, March 6-10, 2017) [bib][BibTeX][abstract][abstract][link][link]
  81. Artem Rudenko, Ludger Inhester, Kota Hanasaki, Xiang Li, Seyyed J. Robatjazi, Benjamin Erk, Rebecca Boll, Koudai Toyota, Yajiang Hao, Oriol Vendrell, Cedric Bomme, Evgeny Savelyev, Benedikt Rudek, Lutz Foucar, Stephen H. Southworth, Carl S. Lehmann, Bertold Krässig, Tatiana Marchenko, Marc Simon, Kiyoshi Ueda, Ken R. Ferguson, Maximilian Bucher, Tais Gorkhover, Sebastian Carron, Roberto Alonso-Mori, Jason E. Koglin, Jonathan Correa, Garth J. Williams, Sébastien Boutet, Linda Young, Christoph Bostedt, Sang-Kil Son, Robin Santra, and Daniel Rolles, Femtosecond response of polyatomic molecules to ultra-intense hard X-rays, Nature 546, 129–132 (2017) [bib][BibTeX][abstract][abstract][link][link][link]doi:10.1038/nature22373
  82. Sang-Kil Son, Otfried Geffert, and Robin Santra, Compton spectra of atoms at high x-ray intensity, J. Phys. B: At. Mol. Opt. Phys. 50, 064003 (2017) [special issue: emerging leaders] [bib][BibTeX][pdf][pdf][abstract][abstract][link][link][link]doi:10.1088/1361-6455/aa59cb
  83. Sang-Kil Son, What happens to atoms and molecules during X-ray free-electron laser pulses? in European XFEL Theory Seminar (European XFEL, Schenefeld, Germany, June 22, 2017) [invited talk] [bib][BibTeX][pdf][pdf][slide][slide: 10Mb][abstract][abstract][link][link]
  84. Sang-Kil Son, Electronic structure of atoms and molecules at high x-ray intensity in New trends in theory for experiments at advanced light sources (European XFEL and CFEL, Schenefeld and Hamburg, Germany, November 29-December 1, 2017) [invited talk] [bib][BibTeX][link][link]
  85. Koudai Toyota, Sang-Kil Son, and Robin Santra, Interplay between relativistic energy corrections and resonant excitations in x-ray multiphoton ionization dynamics of Xe atoms, Phys. Rev. A 95, 043412 (2017) [bib][BibTeX][pdf][pdf][abstract][abstract][link]doi:10.1103/PhysRevA.95.043412
  86. Koudai Toyota, Zoltan Jurek, Sang-Kil Son, and Robin Santra, Calibration of the fluence of an x-ray free-electron laser using XATOM in DPG Spring Meeting of the Section AMOP (German Physical Society, Mainz, Germany, March 6-10, 2017) [bib][BibTeX][abstract][abstract][link][link]
  87. Malik Muhammad Abdullah, Zoltan Jurek, Sang-Kil Son, and Robin Santra, Ultrafast x-ray-driven phenomena in nanocrystals: development and application of powerful simulation tools in 21st International Conference on Ultrafast Phenomena (Hamburg, Germany, July 15-20, 2018) [bib][BibTeX][abstract][abstract][link][link]
  88. Malik Muhammad Abdullah, Sang-Kil Son, Zoltan Jurek, and Robin Santra, Towards the theoretical limitations of x-ray nanocrystallography at high intensity: the validity of the effective-form-factor description, IUCrJ 5, 699–705 (2018) [bib][BibTeX][pdf][pdf][abstract][abstract][link]doi:10.1107/S2052252518011442
  89. John Jasper Bekx, Sang-Kil Son, Robin Santra, and Beata Ziaja, Ab-initio calculation of electron impact ionization cross sections for atoms in exotic electron configurations in DPG Spring Meeting of the Condensed Matter Section (German Physical Society, Berlin, Germany, March 11-16, 2018) [bib][BibTeX][abstract][abstract][link][link]
  90. John Jasper Bekx, Sang-Kil Son, Robin Santra, and Beata Ziaja, Ab initio calculation of electron-impact-ionization cross sections for ions in exotic electron configurations, Phys. Rev. A 98, 022701 (2018) [bib][BibTeX][pdf][pdf][abstract][abstract][link]doi:10.1103/PhysRevA.98.022701
  91. Ludger Inhester, Bart Oostenrijk, Minna Patanen, Esko Kokkonen, Stephen H. Southworth, Christoph Bostedt, Oksana Travnikova, Tatiana Marchenko, Sang-Kil Son, Robin Santra, Marc Simon, Linda Young, and Stacey L. Sorensen, Chemical understanding of the limited site-specificity in molecular inner-shell photofragmentation, J. Phys. Chem. Lett. 9, 1156–1163 (2018) [bib][BibTeX][abstract][abstract][link]doi:10.1021/acs.jpclett.7b03235
  92. Ludger Inhester, Bart Oostenrijk, Sang-Kil Son, Robin Santra, Linda Young, and Stacey L. Sorensen, A chemical understanding of the lack of site-specificity in molecular inner-shell photofragmentation in DPG Spring Meeting of the Section AMOP (German Physical Society, Erlangen, Germany, March 4-9, 2018) [bib][BibTeX][abstract][abstract][link][link]
  93. Ludger Inhester, Kota Hanasaki, Koudai Toyota, Yajiang Hao, Oriol Vendrell, Sang-Kil Son, and Robin Santra, Molecular Ionization Enhancement by Charge Rearrangement at High X-ray Intensity in 21st International Conference on Ultrafast Phenomena (Hamburg, Germany, July 15-20, 2018) [bib][BibTeX][abstract][abstract][link][link]
  94. Daria Kolbasova, Sang-Kil Son, Zoltan Jurek, and Robin Santra, Attosecond transient absorption spectroscopy and electron spectroscopy for noble gas atoms: A TDCIS approach in 21st International Conference on Ultrafast Phenomena (Hamburg, Germany, July 15-20, 2018) [bib][BibTeX][abstract][abstract][link][link]
  95. Yoshiaki Kumagai, Zoltan Jurek, Weiqing Xu, Hironobu Fukuzawa, Koji Motomura, Denys Iablonskyi, Kiyonobu Nagaya, Shin-ichi Wada, Subhendu Mondal, Tetsuya Tachibana, Yuta Ito, Tsukasa Sakai, Kenji Matsunami, Toshiyuki Nishiyama, Takayuki Umemoto, Christophe Nicolas, Catalin Miron, Tadashi Togashi, Kanade Ogawa, Shigeki Owada, Kensuke Tono, Makina Yabashi, Sang-Kil Son, Beata Ziaja, Robin Santra, and Kiyoshi Ueda, Radiation-induced chemical dynamics in Ar clusters exposed to strong x-ray pulses, Phys. Rev. Lett. 120, 223201 (2018) [bib][BibTeX][pdf][pdf][abstract][abstract][link]doi:10.1103/PhysRevLett.120.223201
  96. Benedikt Rudek, Koudai Toyota, Lutz Foucar, Benjamin Erk, Rebecca Boll, Cédric Bomme, Jonathan Correa, Sebastian Carron, Sébastien Boutet, Garth J. Williams, Ken R. Ferguson, Roberto Alonso-Mori, Jason E. Koglin, Tais Gorkhover, Maximilian Bucher, Carl Stefan Lehmann, Bertold Krässig, Stephen H. Southworth, Linda Young, Christoph Bostedt, Kiyoshi Ueda, Tatiana Marchenko, Marc Simon, Zoltan Jurek, Robin Santra, Artem Rudenko, Sang-Kil Son, and Daniel Rolles, Relativistic and resonant effects in the ionization of heavy atoms by ultra-intense hard X-rays, Nat. Commun. 9, 4200 (2018) [bib][BibTeX][pdf][pdf][abstract][abstract][link]doi:10.1038/s41467-018-06745-6
  97. Julia M. Schäfer, Ludger Inhester, Sang-Kil Son, Reinhold F. Fink, and Robin Santra, Electron and fluorescence spectra of a water molecule irradiated by an x-ray free-electron laser pulse, Phys. Rev. A 97, 053415 (2018) [bib][BibTeX][pdf][pdf][abstract][abstract][link]doi:10.1103/PhysRevA.97.053415
  98. Julia M. Schäfer, Ludger Inhester, Sang-Kil Son, Reinhold F. Fink, and Robin Santra, Electron spectra of a water molecule irradiated by an x-ray free-electron laser pulse in DPG Spring Meeting of the Section AMOP (German Physical Society, Erlangen, Germany, March 4-9, 2018) [bib][BibTeX][abstract][abstract][link][link]
  99. Julia M. Schäfer, Ludger Inhester, Sang-Kil Son, Reinhold F. Fink, and Robin Santra, Electron and fluorescence spectra of a water molecule irradiated by an x-ray free-electron laser pulse in 21st International Conference on Ultrafast Phenomena (Hamburg, Germany, July 15-20, 2018) [bib][BibTeX][abstract][abstract][link][link]
  100. Sang-Kil Son, Ultrafast ionization and fragmentation dynamics of molecules at high x-ray intensity in The 7th Topical Conference of the Indian Society of Atomic and Molecular Physics (Indian Society of Atomic and Molecular Physics, Tirupati, India, January 6-8, 2018) [invited talk] [bib][BibTeX][pdf][pdf][slide][slide: 8Mb][abstract][abstract][link][link]
  101. Sang-Kil Son, Ultrafast ionization and fragmentation dynamics of molecules at high x-ray intensity in Light-Matter Interaction: Recent Advances in Theory (DESY, Hamburg, Germany, January 25, 2018) in Satellite Workshop of European XFEL and DESY Photon Science Users' Meeting 2018 [invited talk] [bib][BibTeX][slide][slide: 7Mb][link][link]
  102. Sang-Kil Son, Koudai Toyota, Ludger Inhester, Yajiang Hao, Kota Hanasaki, Robin Santra, Benedikt Rudek, Artem Rudenko, and Daniel Rolles, Giant x-ray multiphoton ionization of atoms and molecules in Multiphoton Processes (Gordon Research Conference, Bryant University, Rhode Island, US, June 24-29, 2018) [poster] [bib][BibTeX][abstract][abstract][link][link]
  103. Sang-Kil Son, Ultrafast dynamics of atoms and molecules with x-ray free-electron lasers in Attosecond Physics at the Nanoscale (Center for Theoretical Physics of Complex Systems, Institute for Basic Science, Daejeon, Korea, October 29-November 2, 2018) [invited talk] [bib][BibTeX][slide][slide: 5Mb][abstract][abstract][link][link]
  104. Sang-Kil Son, What happens to atoms and molecules at high x-ray intensity? in Special seminar (Department of Chemistry, KAIST, Daejeon, Korea, October 31, 2018) [oral presentation] [bib][BibTeX][slide][slide: 12Mb][abstract][abstract][link][link]
  105. Andrea Trabattoni, Sebastian Trippel, Umberto De Giovannini, Jean Francois Olivieri, Joss Wiese, Terry Mullins, Jolijn Onvlee, Sang-Kil Son, Biagio Frusteri, Angel Rubio, and Jochen Kupper, Strong-field physics in the molecular frame in 21st International Conference on Ultrafast Phenomena (Hamburg, Germany, July 15-20, 2018) [bib][BibTeX][abstract][abstract][link][link]
  106. Nora Berrah, Alvaro Sanchez-Gonzalez, Zoltan Jurek, Razib Obaid, Hui Xiong, Richard J. Squibb, Timur Osipov, Alberto Lutman, Li Fang, Thomas Barillot, John D. Bozek, James Cryan, Thomas J.A. Wolf, Daniel Rolles, Ryan Coffee, Kirsten Schnorr, Sven Augustin, Hironobu Fukuzawa, Koji Motomura, N. Niebuhr, Leszek J. Frasinski, Raimund Feifel, Claus P. Schulz, Koudai Toyota, Sang-Kil Son, Kiyoshi Ueda, Thomas Pfeifer, Jon P. Marangos, and Robin Santra, Femtosecond-resolved observation of the fragmentation of buckminsterfullerene following X-ray multiphoton ionization, Nat. Phys. 15, 1279–1283 (2019) [bib][BibTeX][abstract][abstract][link]doi:10.1038/s41567-019-0665-7
  107. Yajiang Hao, Ludger Inhester, Sang-Kil Son, and Robin Santra, Theoretical evidence for the sensitivity to molecular size of charge-rearrangement-enhanced x-ray ionization, Phys. Rev. A 100, 013402 (2019) [bib][BibTeX][pdf][pdf][abstract][abstract][link]doi:10.1103/PhysRevA.100.013402
  108. Ludger Inhester, Yajiang Hao, Sang-Kil Son, and Robin Santra, Enormous enhancement of molecular ionization at high x-ray intensity in XXXI International Conference on Photonic, Electronic and Atomic Collisions (Deauville, France, July 23-30, 2019) [bib][BibTeX][pdf][pdf][abstract][abstract][link][link][link]doi:10.1088/1742-6596/1412/15/152051
  109. Sang-Kil Son, Koudai Toyota, Ludger Inhester, Yajiang Hao, Kota Hanasaki, Robin Santra, Benedikt Rudek, Artem Rudenko, and Daniel Rolles, Giant x-ray multiphoton ionization of atoms and molecules in European XFEL and DESY Photon Science Users' Meeting (DESY, Hamburg, Germany, January 23-25, 2019) [poster] [bib][BibTeX][poster][poster: 7Mb][abstract][abstract][link][link]
  110. Sang-Kil Son, Femtosecond response of atoms and molecules to ultra-intense hard x-rays in Workshop on Science of “From Matter to Materials and Life” (Dresden, Germany, February 13-15, 2019) [oral presentation] [bib][BibTeX][abstract][abstract][link][link]
  111. Sang-Kil Son, Koudai Toyota, Robin Santra, Benedikt Rudek, Artem Rudenko, and Daniel Rolles, Relativistic and resonant effects on x-ray multiphoton multiple ionization of heavy atoms in 83rd Annual Meeting of the DPG and DPG Spring Meeting of the Section AMOP (German Physical Society, Rostock, Germany, March 11-15, 2019) [oral presentation] [bib][BibTeX][slide][slide: 5Mb][abstract][abstract][link][link]
  112. Sang-Kil Son, Ultrafast dynamics of atoms and molecules induced by intense x-ray free-electron laser pulses in 28th Annual International Laser Physics Workshop (Gyeongju, Korea, July 8-12, 2019) [invited talk] [bib][BibTeX][slide][slide: 3Mb][abstract][abstract][link][link]
  113. Sang-Kil Son, What happens to atoms and molecules during x-ray free-electron laser pulses? in Physics/BK21+ Seminar (Department of Physics, POSTECH, Pohang, Korea, July 15, 2019) [invited talk] [bib][BibTeX][slide][slide: 11Mb][abstract][abstract][link][link]
  114. Sang-Kil Son, What happens to atoms and molecules during x-ray free-electron laser pulses? in Physics Seminar (Department of Physics, UNIST, Ulsan, Korea, July 16, 2019) [invited talk] [bib][BibTeX][slide][slide: 10Mb][abstract][abstract]
  115. Koudai Toyota, Zoltan Jurek, Sang-Kil Son, Hironobu Fukuzawa, Kiyoshi Ueda, Nora Berrah, Benedikt Rudek, Daniel Rolles, Artem Rudenko, and Robin Santra, xcalib: a focal spot calibrator for intense X-ray free-electron laser pulses based on the charge state distributions of light atoms, J. Synchrotron Radiat. 26, 1017–1030 (2019) [bib][BibTeX][abstract][abstract][link]doi:10.1107/S1600577519003564
  116. John Jasper Bekx, Sang-Kil Son, Beata Ziaja, and Robin Santra, Electronic-structure calculations for nonisothermal warm dense matter, Phys. Rev. Res. 2, 033061 (2020) [bib][BibTeX][pdf][pdf][abstract][abstract][link]doi:10.1103/PhysRevResearch.2.033061
  117. John Jasper Bekx, Sang-Kil Son, Robin Santra, and Beata Ziaja, Ab-initio description of electronic states in matter excited with ultrashort intense X-ray pulses - Preliminary Results in European XFEL and DESY Photon Science Users' Meeting (DESY, Hamburg, Germany, January 29-31, 2020) [bib][BibTeX][link][link]
  118. Yoshiaki Kumagai, Zoltan Jurek, Weiqing Xu, Hironobu Fukuzawa, Koji Motomura, Denys Iablonskyi, Kiyonobu Nagaya, Shin-ichi Wada, Subhendu Mondal, Tetsuya Tachibana, Yuta Ito, Tsukasa Sakai, Kenji Matsunami, Toshiyuki Nishiyama, Takayuki Umemoto, Christophe Nicolas, Catalin Miron, Tadashi Togashi, Kanade Ogawa, Shigeki Owada, Kensuke Tono, Makina Yabashi, Sang-Kil Son, Beata Ziaja, Robin Santra, and Kiyoshi Ueda, Real-time observation of disintegration processes within argon clusters ionized by a hard-x-ray pulse of moderate fluence, Phys. Rev. A 101, 023412 (2020) [bib][BibTeX][pdf][pdf][abstract][abstract][link]doi:10.1103/PhysRevA.101.023412
  119. Sang-Kil Son, Rebecca Boll, and Robin Santra, Breakdown of frustrated absorption in x-ray sequential multiphoton ionization, Phys. Rev. Res. 2, 023053 (2020) [bib][BibTeX][pdf][pdf][abstract][abstract][link]doi:10.1103/PhysRevResearch.2.023053
  120. Sang-Kil Son, Breakdown of frustrated absorption in x-ray sequential multiphoton ionization in CFEL-DESY Theory Seminar (CFEL, DESY, Hamburg, Germany, April 1, 2020) [oral presentation] [bib][BibTeX][pdf][pdf][slide][slide: 18Mb][abstract][abstract]
  121. Sang-Kil Son, Theory of X-ray–matter interactions in Ultrafast X-ray Summer School (PULSE, Stanford, California, United States, June 15-22, 2020) [lecture] [bib][BibTeX][slide][slide: 14Mb][link][link]
  122. Andrea Trabattoni, Joss Wiese, Umberto De Giovannini, Jean-François Olivieri, Terry Mullins, Jolijn Onvlee, Sang-Kil Son, Biagio Frusteri, Angel Rubio, Sebastian Trippel, and Jochen Küpper, Setting the photoelectron clock through molecular alignment, Nat. Commun. 11, 2546 (2020) [bib][BibTeX][pdf][pdf][abstract][abstract][link]doi:10.1038/s41467-020-16270-0
  123. L. Inhester, T. Jahnke, R. Guillemin, Sang-Kil Son, G. Kastirke, M. Ilchen, J. Rist, D. Trabert, N. Melzer, N. Anders, T. Mazza, R. Boll, A. De Fanis, V. Music, Th. Weber, M. Weller, S. Eckart, K. Fehre, S. Grundmann, A. Hartung, M. Hofmann, C. Janke, M. Kircher, G. Nalin, A. Pier, J. Siebert, N. Strenger, I. Vela-Perez, T. M. Baumann, P. Grychtol, J. Montano, Y. Ovcharenko, N. Rennhack, D. E. Rivas, R. Wagner, P. Ziolkowski, P. Schmidt, T. Marchenko, O. Travnikova, L. Journel, I. Ismail, E. Kukk, J. Niskanen, F. Trinter, C. Vozzi, M. Devetta, S. Stagira, M. Gisselbrecht, A. L. Jäger, X. Li, Y. Malakar, M. Martins, R. Feifel, L. Ph. H. Schmidt, A. Czasch, G. Sansone, D. Rolles, A. Rudenko, K. Ueda, R. Moshammer, R. Dörner, M. Meyer, T. Pfeifer, M. S. Schöffler, R. Santra, M. Simon, and M. N. Piancastelli, Inner-shell-ionization-induced femtosecond structural dynamics of water molecules imaged in real time at an x-ray free-electron laser in XXXII International Conference on Photonic, Electronic and Atomic Collisions (virtual, July 20-23, 2021) [bib][BibTeX][abstract][abstract][link][link]
  124. Till Jahnke, Renaud Guillemin, Ludger Inhester, Sang-Kil Son, Gregor Kastirke, Markus Ilchen, Jonas Rist, Daniel Trabert, Niklas Melzer, Nils Anders, Tommaso Mazza, Rebecca Boll, Alberto De Fanis, Valerija Music, Thorsten Weber, Miriam Weller, Sebastian Eckart, Kilian Fehre, Sven Grundmann, Alexander Hartung, Max Hofmann, Christian Janke, Max Kircher, Giammarco Nalin, Andreas Pier, Juliane Siebert, Nico Strenger, Isabel Vela-Perez, Thomas M. Baumann, Patrik Grychtol, Jacobo Montano, Yevheniy Ovcharenko, Nils Rennhack, Daniel E. Rivas, Rene Wagner, Pawel Ziolkowski, Philipp Schmidt, Tatiana Marchenko, Oksana Travnikova, Loïc Journel, Iyas Ismail, Edwin Kukk, Johannes Niskanen, Florian Trinter, Caterina Vozzi, Michele Devetta, Salvatore Stagira, Mathieu Gisselbrecht, Anna Lena Jäger, Xiang Li, Yubaraj Malakar, Michael Martins, Raimund Feifel, Lothar Ph.H. Schmidt, Achim Czasch, Giuseppe Sansone, Daniel Rolles, Artem Rudenko, Robert Moshammer, Reinhard Dörner, Michael Meyer, Thomas Pfeifer, Markus S. Schöffler, Robin Santra, Marc Simon, and Maria Novella Piancastelli, Inner-shell-ionization-induced femtosecond structural dynamics of water molecules imaged at an x-ray free-electron laser, Phys. Rev. X 11, 041044 (2021) [bib][BibTeX][pdf][pdf][abstract][abstract][link]doi:10.1103/PhysRevX.11.041044
  125. Rui Jin, Malik Muhammad Abdullah, Zoltan Jurek, Robin Santra, and Sang-Kil Son, Transient ionization potential depression in nonthermal dense plasmas at high x-ray intensity, Phys. Rev. E 103, 023203 (2021) [bib][BibTeX][pdf][pdf][abstract][abstract][link]doi:10.1103/PhysRevE.103.023203
  126. Daria Kolbasova, Maximilian Hartmann, Rui Jin, Alexander Blättermann, Christian Ott, Sang-Kil Son, Thomas Pfeifer, and Robin Santra, Probing ultrafast coherent dynamics in core-excited xenon by using attosecond XUV-NIR transient absorption spectroscopy, Phys. Rev. A 103, 043102 (2021) [bib][BibTeX][pdf][pdf][abstract][abstract][link]doi:10.1103/PhysRevA.103.043102
  127. Daria Kolbasova, Maximilian Hartmann, Rui Jin, Alexander Blättermann, Christian Ott, Sang-Kil Son, Thomas Pfeifer, and Robin Santra, Probing ultrafast coherent dynamics in core-excited xenon by using attosecond XUV-NIR transient absorption spectroscopy in XXXII International Conference on Photonic, Electronic and Atomic Collisions (virtual, July 20-23, 2021) [bib][BibTeX][abstract][abstract][link][link]
  128. Yoshiaki Kumagai, Zoltan Jurek, Weiqing Xu, Vikrant Saxena, Hironobu Fukuzawa, Koji Motomura, Denys Iablonskyi, Kiyonobu Nagaya, Shin-ichi Wada, Yuta Ito, Tsukasa Takanashi, Shuhei Yamada, Yuta Sakakibara, Toshiyuki Nishiyama, Takayuki Umemoto, Minna Patanen, John D. Bozek, Ioan Dancus, Mihail Cernaianu, Catalin Miron, Tobias Bauer, Melanie Mucke, Edwin Kukk, Shigeki Owada, Tadashi Togashi, Kensuke Tono, Makina Yabashi, Sang-Kil Son, Beata Ziaja, Robin Santra, and Kiyoshi Ueda, Suppression of thermal nanoplasma emission in clusters strongly ionized by hard x-rays, J. Phys. B: At. Mol. Opt. Phys. 54, 044001 (2021) [Special issue on Frontiers of AMO Science with FELs and Synchrotron Radiation] [bib][BibTeX][abstract][abstract][link]doi:10.1088/1361-6455/abd878
  129. Aaron C. LaForge, Sang-Kil Son, Debadarshini Mishra, Markus Ilchen, Stephen Duncanson, Eemeli Eronen, Edwin Kukk, Stanislaw Wirok-Stoletow, Daria Kolbasova, Peter Walter, Rebecca Boll, Alberto De Fanis, Michael Meyer, Yevheniy Ovcharenko, Daniel E. Rivas, Philipp Schmidt, Sergey Usenko, Robin Santra, and Nora Berrah, Resonance-enhanced multiphoton ionization in the x-ray regime, Phys. Rev. Lett. 127, 213202 (2021) [bib][BibTeX][pdf][pdf][abstract][abstract][link]doi:10.1103/PhysRevLett.127.213202
  130. Xiang Li, Ludger Inhester, Timur Osipov, Rebecca Boll, Ryan Coffee, James Cryan, Ave Gatton, Tais Gorkhover, Gregor Hartman, Markus Ilchen, André Knie, Ming-Fu Lin, Michael P. Minitti, Clemens Weninger, Thomas J.A. Wolf, Sang-Kil Son, Robin Santra, Daniel Rolles, Artem Rudenko, and Peter Walter, Electron-ion coincidence measurements of molecular dynamics with intense x-ray pulses, Sci. Rep. 11, 505 (2021) [bib][BibTeX][pdf][pdf][abstract][abstract][link]doi:10.1038/s41598-020-79818-6
  131. Xiang Li, Ludger Inhester, Seyyed J. Robatjazi, Benjamin Erk, Rebecca Boll, Kota Hanasaki, Koudai Toyota, Yajiang Hao, Cedric Bomme, Benedikt Rudek, Lutz Foucar, Stephen H. Southworth, Carl S. Lehmann, Bertold Krässig, Tatiana Marchenko, Marc Simon, Kiyoshi Ueda, Ken R. Ferguson, Maximilian Bucher, Tais Gorkhover, Sebastian Carron, Roberto Alonso-Mori, Jason E. Koglin, Jonathan Correa, Garth J. Williams, Sébastien Boutet, Linda Young, Christoph Bostedt, Sang-Kil Son, Robin Santra, Daniel Rolles, and Artem Rudenko, Pulse energy and pulse duration effects in the ionization and fragmentation of iodomethane by ultraintense hard x rays, Phys. Rev. Lett. 127, 093202 (2021) [bib][BibTeX][pdf][pdf][abstract][abstract][link]doi:10.1103/PhysRevLett.127.093202
  132. A. Rörig, T. M. Baumann, B. Erk, M. Ilchen, J. Laksman, T. Mazza, M. Meyer, V. Musić, S. Pathak, D. E. Rivas, D. Rolles, R. Santra, J. M. Schäfer, S. Serkez, P. Schmidt, S. Usenko, Sang-Kil Son, and R. Boll, Non-linear multiphoton ionisation dynamics of xenon upon irradiation by highly intense soft X-ray free-electron laser pulses in XXXII International Conference on Photonic, Electronic and Atomic Collisions (virtual, July 20-23, 2021) [bib][BibTeX][abstract][abstract][link][link]
  133. Sang-Kil Son, Resonances in x-ray multiphoton ionization in Molecular quantum dynamics beyond bound states (Institute of Physics, Rostock University, Rostock, Germany, March 10-12, 2021) [invited talk] [bib][BibTeX][slide][slide: 7Mb][abstract][abstract][link][link]
  134. Sang-Kil Son, A two-step model for studying ionization potential depression in dense plasmas in Average Atom Models for Warm Dense Matter (University of California, Berkeley, Berkeley, California, United States, June 28-29, 2021) [invited talk] [bib][BibTeX][slide][slide: 6Mb][link][link]
  135. Sang-Kil Son, Aaron C. LaForge, Debadarshini Mishra, Markus Ilchen, Stephen Duncanson, Eemeli Eronen, Edwin Kukk, Stanislaw Wirok-Stoletow, Daria Kolbasova, Peter Walter, Rebecca Boll, Alberto De Fanis, Michael Meyer, Yevheniy Ovcharenko, Daniel E. Rivas, Philipp Schmidt, Sergey Usenko, Robin Santra, and Nora Berrah, Resonance-enhanced multiphoton ionization in the x-ray regime in XXXII International Conference on Photonic, Electronic and Atomic Collisions (virtual, July 20-23, 2021) [poster] [bib][BibTeX][poster][poster: 1Mb][abstract][abstract][link][link]
  136. Sang-Kil Son, What happens to atoms, molecules, and dense plasmas at high x-ray intensity? in Seminar (Laboratory for Laser Energetics, University of Rochester, Rochester, New York, United States, September 14, 2021) [invited talk] [bib][BibTeX][slide][slide: 20Mb]
  137. Sang-Kil Son, Aaron C. LaForge, Debadarshini Mishra, Markus Ilchen, Stephen Duncanson, Eemeli Eronen, Edwin Kukk, Stanislaw Wirok-Stoletow, Daria Kolbasova, Peter Walter, Rebecca Boll, Alberto De Fanis, Michael Meyer, Yevheniy Ovcharenko, Daniel E. Rivas, Philipp Schmidt, Sergey Usenko, Robin Santra, and Nora Berrah, Resonance-enhanced multiphoton ionization in the x-ray regime in Workshop on Science of “From Matter to Materials and Life” (virtual, November 22-24, 2021) [poster] [bib][BibTeX][poster][poster: 1Mb][abstract][abstract]
  138. Rebecca Boll, Julia M. Schäfer, Benoît Richard, Kilian Fehre, Gregor Kastirke, Zoltan Jurek, Markus S. Schöffler, Malik M. Abdullah, Nils Anders, Thomas M. Baumann, Sebastian Eckart, Benjamin Erk, Alberto De Fanis, Reinhard Dörner, Lutz Foucar, Sven Grundmann, Patrik Grychtol, Alexander Hartung, Max Hofmann, Markus Ilchen, Ludger Inhester, Christian Janke, Rui Jin, Max Kircher, Katharina Kubicek, Maksim Kunitski, Xiang Li, Tommaso Mazza, Severin Meister, Niklas Melzer, Jacobo Montano, Valerija Music, Giammarco Nalin, Yevheniy Ovcharenko, Christopher Passow, Andreas Pier, Nils Rennhack, Jonas Rist, Daniel E. Rivas, Daniel Rolles, Ilme Schlichting, Lothar Ph.H. Schmidt, Philipp Schmidt, Juliane Siebert, Nico Strenger, Daniel Trabert, Florian Trinter, Isabel Vela-Perez, Rene Wagner, Peter Walter, Miriam Weller, Pawel Ziolkowski, Sang-Kil Son, Artem Rudenko, Michael Meyer, Robin Santra, and Till Jahnke, X-ray multiphoton-induced Coulomb explosion images complex single molecules, Nat. Phys. 18, 423–428 (2022) [bib][BibTeX][pdf][pdf][abstract][abstract][link]doi:10.1038/s41567-022-01507-0
  139. Laura Budewig, Sang-Kil Son, and Robin Santra, Theoretical investigation of orbital alignment of x-ray-ionized atoms in exotic electronic configurations, Phys. Rev. A 105, 033111 (2022) [bib][BibTeX][pdf][pdf][abstract][abstract][link]doi:10.1103/PhysRevA.105.033111
  140. Rui Jin, Zoltan Jurek, Robin Santra, and Sang-Kil Son, Plasma environmental effects in the atomic structure for simulating x-ray free-electron-laser-heated solid-density matter, Phys. Rev. E 106, 015206 (2022) [bib][BibTeX][pdf][pdf][abstract][abstract][link]doi:10.1103/PhysRevE.106.015206
  141. Aljoscha Rörig, Thomas M. Baumann, Benjamin Erk, Markus Ilchen, Joakim Laksman, Valerija Musić, Shashank Pathak, Daniel E. Rivas, Daniel Rolles, Svitozar Serkez, Sergey Usenko, Philipp Schmidt, Tommaso Mazza, Robin Santra, Michael Meyer, Sang-Kil Son, and Rebecca Boll, Multiple-core-hole resonance spectroscopy with ultraintense X-ray pulses in Science at FELs (DESY and European XFEL, Hamburg, Germany, September 19-23, 2022) [bib][BibTeX][abstract][abstract][link][link]
  142. Sang-Kil Son, Relativistic effects in x-ray multiphoton ionization dynamics in 13th International Conference on Relativistic Effects in Heavy-Element Chemistry and Physics (Assisi, Italy, September 26-30, 2022) [invited talk] [bib][BibTeX][slide][slide: 12Mb][abstract][abstract][link][link]
  143. Sang-Kil Son and Robin Santra, Unusual phenomena in x-ray multiphoton ionization of atoms in Science at FELs (DESY and European XFEL, Hamburg, Germany, September 19-23, 2022) [poster] [bib][BibTeX][poster][poster: 5Mb][abstract][abstract][link][link]
  144. Stanislaw Wirok-Stoletow, Rui Jin, Daria Kolbasova, Sang-Kil Son, Andrew Aquila, and Robin Santra, Nonsequential two-photon absorption in solid Ge irradiated by an intense x-ray free-electron-laser pulse, Phys. Rev. A 106, 023118 (2022) [bib][BibTeX][pdf][pdf][abstract][abstract][link]doi:10.1103/PhysRevA.106.023118
  145. Niels Breckwoldt, Sang-Kil Son, Tommaso Mazza, Aljoscha R"orig, Rebecca Boll, Michael Meyer, Aaron C. LaForge, Debadarshini Mishra, Nora Berrah, and Robin Santra, Machine-learning calibration of intense x-ray free-electron-laser pulses using Bayesian optimization, Phys. Rev. Res. 5, 023114 (2023) [bib][BibTeX][pdf][pdf][abstract][abstract][link]doi:10.1103/PhysRevResearch.5.023114
  146. Laura Budewig, Sang-Kil Son, and Robin Santra, State-resolved ionization dynamics of neon atom induced by x-ray free-electron-laser pulses, Phys. Rev. A 107, 013102 (2023) [bib][BibTeX][pdf][pdf][abstract][abstract][link]doi:10.1103/PhysRevA.107.013102
  147. Laura Budewig, Sang-Kil Son, Robin Santra, and Marina Tropmann-Frick, State-resolved ionization dynamics calculations combined with machine learning in DASHH Evaluation (Helmholtz Graduate School DASHH, Hamburg, Germany, May 31-June 2, 2023) [bib][BibTeX][abstract][abstract]
  148. Tommaso Mazza, Thomas M. Baumann, Rebecca Boll, Alberto De Fanis, Patrik Grychtol, Markus Ilchen, Jacobo Montaño, Valerija Music, Yevheniy Ovcharenko, Nils Rennhack, Daniel E. Rivas, Aljoscha Rörig, Philipp Schmidt, Sergey Usenko, Pawel Ziołkowski, Daniele La Civita, Maurizio Vannoni, Harald Sinn, Barbara Keitel, Elke Plönjes, Ulf Fini Jastrow, Andrey Sorokin, Kai Tiedtke, Klaus Mann, Bernd Schäfer, Niels Breckwoldt, Sang-Kil Son, and Michael Meyer, The beam transport system for the Small Quantum Systems instrument at the European XFEL: optical layout and first commissioning results, J. Synchrotron Radiat. 30, 457–467 (2023) [bib][BibTeX][pdf][pdf][abstract][abstract][link]doi:10.1107/S1600577522012085
  149. Aljoscha Rörig, Sang-Kil Son, Tommaso Mazza, Philipp Schmidt, Thomas M. Baumann, Benjamin Erk, Markus Ilchen, Joakim Laksman, Valerija Music, Shashank Pathak, Daniel E. Rivas, Daniel Rolles, Svitozar Serkez, Sergey Usenko, Robin Santra, Michael Meyer, and Rebecca Boll, Multiple-core-hole resonance spectroscopy with ultraintense X-ray pulses, Nat. Commun. 14, 5738 (2023) [bib][BibTeX][pdf][pdf][abstract][abstract][link]doi:10.1038/s41467-023-41505-1
  150. Sang-Kil Son, New opportunities in x-ray spectroscopy at high intensity in XFEL Special Seminar (PAL XFEL, POSTECH, Pohang, Korea, July 20, 2023) [invited talk] [bib][BibTeX][pdf][pdf][abstract][abstract]
  151. Sang-Kil Son, Aljoscha Rörig, Tommaso Mazza, Philipp Schmidt, Thomas M. Baumann, Benjamin Erk, Markus Ilchen, Joakim Laksman, Valerija Music, Shashank Pathak, Daniel E. Rivas, Daniel Rolles, Svitozar Serkez, Sergey Usenko, Robin Santra, Michael Meyer, and Rebecca Boll, Multiple-core-hole resonance spectroscopy with ultraintense X-ray pulses in Workshop on Science of “From Matter to Materials and Life” (University of Jena, Jena, Germany, September 27-29, 2023) [poster] [bib][BibTeX]
  152. Sang-Kil Son, Multiple-core-hole resonance spectroscopy with ultraintense X-ray pulses in CFEL-DESY Theory Seminar (CFEL, DESY, Hamburg, Germany, September 20, 2023) [oral presentation] [bib][BibTeX][pdf][pdf][slide][slide: 16Mb][abstract][abstract]
  153. Laura Budewig, Sang-Kil Son, Zoltan Jurek, Malik Muhammad Abdullah, Marina Tropmann-Frick, and Robin Santra, X-ray-induced atomic transitions via machine learning: A computational investigation, Phys. Rev. Res. 6, 013265 (2024) [bib][BibTeX][pdf][pdf][abstract][abstract][link]doi:10.1103/PhysRevResearch.6.013265
  154. Laura Budewig, Sang-Kil Son, and Robin Santra, Electron-cloud alignment dynamics induced by an intense X-ray free-electron laser pulse: a case study on atomic argon, Commun. Phys. 7, 363 (2024) [special issue: Ultrafast X-ray Spectroscopy] [bib][BibTeX][pdf][pdf][abstract][abstract][link]doi:10.1038/s42005-024-01852-x
  155. Sang-Kil Son, Theoretical aspects of x-ray spectroscopy at high intensity in International Workshop on AMO Science at X-ray Free Electron Laser (ShanghaiTech University, Shanghai, China, April 19-21, 2024) [invited talk] [bib][BibTeX][link][link]
  156. Sang-Kil Son, Laura Budewig, and Robin Santra, Quantum-state-resolved ionization dynamics induced by x-ray free-electron laser pulses in International Workshop on Ultra-Fast Science (East China Normal University, Shanghai, China, April 21-23, 2024) [poster] [bib][BibTeX][poster][poster: 6Mb][abstract][abstract][link][link]
  157. Sang-Kil Son, Aljoscha Rörig, Tommaso Mazza, Philipp Schmidt, Thomas Baumann, Benjamin Erk, Markus Ilchen, Joakim Laksman, Valerija Music, Shashank Pathak, Daniel Rivas, Daniel Rolles, Svitozar Serkez, Sergey Usenko, Robin Santra, Michael Meyer, and Rebecca Boll, Multiple-core-hole resonance spectroscopy with ultraintense x-ray pulses in International Conference on Many Particle Spectroscopy of Atoms, Molecules, Clusters and Surfaces (Fudan University, Shanghai, China, April 23-26, 2024) [poster] [bib][BibTeX][poster][poster: 3Mb][abstract][abstract][link][link]

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