home | iBib | list | admin

Abstract of [Son17a]

What happens to atoms and molecules during X-ray free-electron laser pulses?

Sang-Kil Son

European XFEL Theory Seminar
(European XFEL, Schenefeld, Germany, June 22, 2017) [invited talk]

[bib][BibTeX][pdf][pdf][slide][slide: 10Mb][link]http://www.xfel.eu/events/european_xfel_theory_seminars/what_happens_to_atoms_and_molecules_during_x_ray_free_electron_laser_pulses

In this talk, I will present a theoretical framework to treat x-ray-induced processes and to simulate detailed ionization and fragmentation dynamics of atoms and molecules during intense XFEL pulses, introducing two dedicated x-ray physics toolkits, XATOM and XMOLECULE. They can provide a fundamental insight to understand how matter interact with intense XFEL pulses. I will mainly present two recent studies: x-ray multiphoton ionization dynamics of xenon atoms including resonant and relativistic effects [1,2] and ultrafast explosion dynamics of iodomethane molecules [3]. In both studies, atoms and molecules are interacting with ultra-intense hard x-rays. Using our toolkits, charge state distributions and kinetic energy releases of fragments are calculated to probe ionization and fragmentation dynamics, and compared with recent experimental results conducted at LCLS. I will discuss very simple but striking phenomena that uniquely happen at high x-ray intensity, namely resonance-enabled x-ray multiple ionization (REXMI) and charge-rearrangement-enhanced x-ray ionization of molecules (CREXIM). With these examples, I will demonstrate how important understanding of the fundamental XFEL-matter interaction is and how theory and experiment work together to advance XFEL science. [1] K. Toyota, S.-K. Son, and R. Santra, Phys. Rev. A 95, 043412 (2017). [2] B. Rudek et al., in preparation. [3] A. Rudenko, L. Inhester, et al., Nature (in press, 2017), doi: 10.1038/nature22373

Tags: XATOM, XMOLECULE, x-ray multiphoton ionization, x-ray explosion dynamics, REXMI, CREXIM, Xe, CH3I, XFEL, LCLS, SACLA, CFEL, DESY

[Page1] [Page2] [Page3] [Page4] [Page5]
[Page6] [Page7] [Page8] [Page9] [Page10]
[Page11] [Page12] [Page13] [Page14] [Page15]
[Page16] [Page17] [Page18] [Page19] [Page20]
[Page21] [Page22] [Page23] [Page24] [Page25]
[Page26] [Page27] [Page28] [Page29] [Page30]
[Page31] [Page32] [Page33] [Page34] [Page35]
[Page36] [Page37] [Page38] [Page39] [Page40]
[Page41] [Page42] [Page43] [Page44] [Page45]
[Page46] [Page47] [Page48]
Download a PDF: 10Mb

made by ZN