All publications with Sang-Kil Son

1. Young-Kyu Han, Sang-Kil Son, Yoon Jeong Choi, and Yoon Sup Lee, Structures and stabilities for halides and oxides of transactinide elements Rf, Db, and Sg calculated by relativistic effective core potential methods, J. Phys. Chem. A 103, 9109–9115 (1999) [BibTeX][abstract]doi:10.1021/jp9917953
2. Chang Seop Hong, Sang-Kil Son, Yoon Sup Lee, Moo-Jin Jun, and Youngkyu Do, High-dimensional manganese(II) compounds with noncovalent and/or covalent bonds derived from flexible ligands: Self-assembly and structural transformation, Inorg. Chem. 38, 5602–5610 (1999) [BibTeX][abstract]doi:10.1021/ic990611w
3. Young-Kyu Han, Cheolbeom Bae, Sang-Kil Son, and Yoon Sup Lee, Spin-orbit effects on the transactinide p-block element monohydrides MH (M=element 113-118), J. Chem. Phys. 112, 2684–2691 (2000) [BibTeX][abstract]doi:10.1063/1.480842
4. Chang Seop Hong, Ja-eung Koo, Sang-Kil Son, Yoon Sup Lee, Yaung-Soo Kim, and Youngkyu Do, Unusual ferromagnetic couplings in single end-to-end azide-bridged cobalt(II) and nickel(II) chain systems, Chem. Eur. J. 7, 4243–4252 (2001) [BibTeX][abstract]doi:10.1002/1521-3765(20011001)7:19%3C4243::AID-CHEM4243%3E3.0.CO;2-U
5. Young-Kyu Han, Kyoung Hoon Kim, Sang-Kil Son, and Yoon Sup Lee, Effects of intramolecular basis set superposition error on conformational energy difference of 1,2-difluoroethane and 1,2-dimethoxyethane, Bull. Korean Chem. Soc. 23, 1267–1271 (2002) [BibTeX][pdf][abstract]doi:10.5012/bkcs.2002.23.9.1267
6. Juan J. Carrera, Sang-Kil Son, and Shih-I Chu, Ab initio theoretical investigation of the frequency comb structure and coherence in the vuv-xuv regimes via high-order harmonic generation, Phys. Rev. A 77, 031401(R) (2008) [BibTeX][pdf][abstract]doi:10.1103/PhysRevA.77.031401
7. Sang-Kil Son and Shih-I Chu, Many-mode Floquet theoretical approach for coherent control of multiphoton dynamics driven by intense frequency-comb laser fields, Phys. Rev. A 77, 063406 (2008) [BibTeX][pdf][abstract]doi:10.1103/PhysRevA.77.063406
8. Sang-Kil Son, Siyuan Han, and Shih-I Chu, Floquet formulation for the investigation of multiphoton quantum interference in a superconducting qubit driven by a strong ac field, Phys. Rev. A 79, 032301 (2009) [BibTeX][pdf][abstract]doi:10.1103/PhysRevA.79.032301
9. Sang-Kil Son and Shih-I Chu, Multielectron effects on the orientation dependence and photoelectron angular distribution of multiphoton ionization of CO₂ in strong laser fields, Phys. Rev. A 80, 011403(R) (2009) [BibTeX][pdf][abstract]doi:10.1103/PhysRevA.80.011403
10. Sang-Kil Son and Shih-I Chu, Theoretical study of orientation-dependent multiphoton ionization of polyatomic molecules in intense ultrashort laser fields: A new time-dependent Voronoi-cell finite difference method, Chem. Phys. 366, 91–102 (2009) [BibTeX][pdf][abstract]doi:10.1016/j.chemphys.2009.09.006
11. Sang-Kil Son, Dmitry A. Telnov, and Shih-I Chu, Probing the origin of elliptical high-order harmonic generation from aligned molecules in linearly polarized laser fields, Phys. Rev. A 82, 043829 (2010) [BibTeX][pdf][abstract]doi:10.1103/PhysRevA.82.043829
12. 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) [BibTeX][pdf][abstract]doi:10.1103/PhysRevLett.106.083002
13. Sang-Kil Son, Voronoi-cell finite difference method for accurate electronic structure calculation of polyatomic molecules on unstructured grids, J. Comput. Phys. 230, 2160–2173 (2011) [BibTeX][pdf][abstract]doi:10.1016/j.jcp.2010.12.012
14. 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) [BibTeX][pdf][abstract]doi:10.1103/PhysRevA.83.033402
15. Sang-Kil Son, Henry N. Chapman, and Robin Santra, Multiwavelength anomalous diffraction at high x-ray intensity, Phys. Rev. Lett. 107, 218102 (2011) [BibTeX][pdf][abstract]doi:10.1103/PhysRevLett.107.218102
16. 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) [BibTeX][pdf][abstract]doi:10.1103/PhysRevA.86.033401
17. 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) [BibTeX][abstract]doi:10.1038/nphoton.2012.261
18. 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) [BibTeX][pdf][abstract]doi:10.1103/PhysRevA.85.063415
19. 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) [BibTeX][pdf][abstract]doi:10.1103/PhysRevA.85.023414
20. 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) [BibTeX][pdf][abstract]doi:10.1103/PhysRevA.86.033411
21. 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) [BibTeX][pdf][abstract]doi:10.1103/PhysRevA.88.053405
22. 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) [BibTeX][pdf][abstract]doi:10.1103/PhysRevLett.110.173005
23. 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] [BibTeX][abstract]doi:10.1088/0953-4075/46/16/164024
24. 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) [BibTeX][pdf][abstract]doi:10.1103/PhysRevLett.110.234801
25. 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) [BibTeX][pdf][abstract]doi:10.1103/PhysRevA.87.023413
26. 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] [BibTeX][pdf][abstract][link]doi:10.1088/0953-4075/46/16/164015
27. 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] [BibTeX][abstract]doi:10.1088/0953-4075/46/16/164009
28. 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) [BibTeX][pdf][abstract]doi:10.1038/ncomms5281
29. 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) [BibTeX][pdf][abstract]doi:10.1088/1367-2630/16/7/073042
30. 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) [BibTeX][pdf][abstract]doi:10.1103/PhysRevX.4.031004
31. 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) [BibTeX][abstract]doi:10.1107/S1600577514027854
32. 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] [BibTeX][pdf][abstract]doi:10.1063/1.4919398
33. 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) [BibTeX][pdf][abstract]doi:10.1107/S2052252515014049
34. 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] [BibTeX][pdf][abstract]doi:10.1063/1.4919794
35. 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) [BibTeX][pdf][abstract]doi:10.1038/srep10977
36. 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) [BibTeX][pdf][abstract]doi:10.3390/photonics2010256
37. 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) [BibTeX][pdf][abstract]doi:10.1063/1.4958887
38. 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) [BibTeX][pdf][abstract]doi:10.1103/PhysRevA.94.023422
39. 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] [BibTeX][abstract]doi:10.1107/S1600576716006014
40. 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) [BibTeX][pdf][abstract]doi:10.1103/PhysRevE.93.053210
41. 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) [BibTeX][pdf][abstract]doi:10.1103/PhysRevE.96.023205
42. 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) [BibTeX][abstract][link]doi:10.1038/nature22373
43. 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] [BibTeX][pdf][abstract][link]doi:10.1088/1361-6455/aa59cb
44. 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) [BibTeX][pdf][abstract]doi:10.1103/PhysRevA.95.043412
45. 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) [BibTeX][pdf][abstract]doi:10.1107/S2052252518011442
46. 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) [BibTeX][pdf][abstract]doi:10.1103/PhysRevA.98.022701
47. 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) [BibTeX][abstract]doi:10.1021/acs.jpclett.7b03235
48. 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) [BibTeX][pdf][abstract]doi:10.1103/PhysRevLett.120.223201
49. 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) [BibTeX][pdf][abstract]doi:10.1038/s41467-018-06745-6
50. 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) [BibTeX][pdf][abstract]doi:10.1103/PhysRevA.97.053415
51. 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) [BibTeX][abstract]doi:10.1038/s41567-019-0665-7
52. 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) [BibTeX][pdf][abstract]doi:10.1103/PhysRevA.100.013402
53. 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) [BibTeX][abstract]doi:10.1107/S1600577519003564
54. 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) [BibTeX][pdf][abstract]doi:10.1103/PhysRevResearch.2.033061
55. 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) [BibTeX][pdf][abstract]doi:10.1103/PhysRevA.101.023412
56. Sang-Kil Son, Rebecca Boll, and Robin Santra, Breakdown of frustrated absorption in x-ray sequential multiphoton ionization, Phys. Rev. Res. 2, 023053 (2020) [BibTeX][pdf][abstract]doi:10.1103/PhysRevResearch.2.023053
57. 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) [BibTeX][pdf][abstract]doi:10.1038/s41467-020-16270-0
58. 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) [BibTeX][pdf][abstract]doi:10.1103/PhysRevX.11.041044
59. 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) [BibTeX][pdf][abstract]doi:10.1103/PhysRevE.103.023203
60. 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) [BibTeX][pdf][abstract]doi:10.1103/PhysRevA.103.043102
61. 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] [BibTeX][abstract]doi:10.1088/1361-6455/abd878
62. 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) [BibTeX][pdf][abstract]doi:10.1103/PhysRevLett.127.213202
63. 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) [BibTeX][pdf][abstract]doi:10.1038/s41598-020-79818-6
64. 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) [BibTeX][pdf][abstract]doi:10.1103/PhysRevLett.127.093202
65. 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) [BibTeX][pdf][abstract]doi:10.1038/s41567-022-01507-0
66. 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) [BibTeX][pdf][abstract]doi:10.1103/PhysRevA.105.033111
67. 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) [BibTeX][pdf][abstract]doi:10.1103/PhysRevE.106.015206
68. 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) [BibTeX][pdf][abstract]doi:10.1103/PhysRevA.106.023118
69. 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) [BibTeX][pdf][abstract]doi:10.1103/PhysRevResearch.5.023114
70. 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) [BibTeX][pdf][abstract]doi:10.1103/PhysRevA.107.013102
71. 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) [BibTeX][pdf][abstract]doi:10.1107/S1600577522012085
72. 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) [BibTeX][pdf][abstract]doi:10.1038/s41467-023-41505-1
73. 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) [BibTeX][pdf][abstract]doi:10.1103/PhysRevResearch.6.013265

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