X-Ray FEL Induced Double Core-Hole and High Charge State Production

被引：5
|
作者：
Osipov, T. Y. [1 ]
Fang, L. [1 ]
Murphy, B. F. [1 ]
Hoener, M. [1 ]
Berrah, N. [1 ]
机构：
[1] Western Michigan Univ, Dept Phys, Kalamazoo, MI 49008 USA
来源：
XXVII INTERNATIONAL CONFERENCE ON PHOTONIC, ELECTRONIC AND ATOMIC COLLISIONS (ICPEAC 2011), PTS 1-15 | 2012年 / 388卷
关键词：
FEL; X-ray; Photoionization; MIXTURES;
D O I：
10.1088/1742-6596/388/1/012030
中图分类号：
O64 [物理化学（理论化学）、化学物理学]; O56 [分子物理学、原子物理学];
学科分类号：
070203 ; 070304 ; 081704 ; 1406 ;
摘要：
We report novel results on multiple photoionization of the N-2 molecule by femtosecond x-ray pulses from the Linac Coherent Light Source free electron laser. Ion spectroscopy reveals the ionization and dissociation dynamics, including a molecular mechanism of frustrated absorption that suppresses the formation of high charge states at short pulse durations. Auger and photo-electron analysis of double core hole production (through absorption of two photons on the time scale shorter than the Auger decay) agrees well with theory for the case of both K-shell holes on the same N atom, and gives an experimental upper bound for the relative contribution in case of one core hole on each N atom.
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页数：6
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