Resonance-mediated atomic ionization dynamics induced by ultraintense x-ray pulses
Open Access
- 31 December 2015
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review A
- Vol. 92 (6), 063430
- https://doi.org/10.1103/physreva.92.063430
Abstract
We describe the methodology of our recently developed Monte Carlo rate equation (MCRE) approach, which systematically incorporates bound-bound resonances to model multiphoton ionization dynamics induced by high-fluence, high-intensity x-ray free-electron laser (XFEL) pulses. These resonances are responsible for ionization far beyond that predicted by the sequential single photon absorption model and are central to a quantitative understanding of atomic ionization dynamics in XFEL pulses. We also present calculated multiphoton ionization dynamics for Kr and Xe atoms in XFEL pulses for a variety of conditions, to compare the effects of bandwidth, pulse duration, pulse fluence, and photon energy. This comprehensive computational investigation reveals areas in the photon energy–pulse fluence landscape where resonances are critically important. We also uncover a mechanism, preservation of inner-shell vacancies (PIVS), whereby radiation damage is enhanced at higher XFEL intensities and identify the sequence of core-outer–Rydberg, core-valence, and core-core resonances encountered during multiphoton x-ray ionization.Keywords
Funding Information
- U.S. Department of Energy
- Office of Science
This publication has 45 references indexed in Scilit:
- Deep Inner-Shell Multiphoton Ionization by Intense X-Ray Free-Electron Laser PulsesPhysical Review Letters, 2013
- Resonance-enhanced multiple ionization of krypton at an x-ray free-electron laserPhysical Review A, 2013
- Ultra-efficient ionization of heavy atoms by intense X-ray free-electron laser pulsesNature Photonics, 2012
- A compact X-ray free-electron laser emitting in the sub-ångström regionNature Photonics, 2012
- Single mimivirus particles intercepted and imaged with an X-ray laserNature, 2011
- Femtosecond X-ray protein nanocrystallographyNature, 2011
- Double Core-Hole Production in: Beating the Auger ClockPhysical Review Letters, 2010
- First lasing and operation of an ångstrom-wavelength free-electron laserNature Photonics, 2010
- Femtosecond electronic response of atoms to ultra-intense X-raysNature, 2010
- Potential for biomolecular imaging with femtosecond X-ray pulsesNature, 2000