Massively Parallel Ionization of Extended Atomic Systems

被引：9

作者：

Gnodtke, Christian ^{[1
]}

Saalmann, Ulf ^{[1
,2
]}

Rost, Jan-Michael ^{[1
,2
]}

机构：

[1] Max Planck Inst Phys Komplexer Syst, D-01187 Dresden, Germany

[2] CFEL, Max Planck Adv Study Grp, D-22761 Hamburg, Germany

来源：

PHYSICAL REVIEW LETTERS | 2012年 / 108卷 / 17期

关键词：

FREE-ELECTRON LASER; X-RAY PULSES; OPERATION; CLUSTER;

D O I：

10.1103/PhysRevLett.108.175003

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Massively parallel ionization of many atoms in a cluster or biomolecule is identified as a new phenomenon of light-matter interaction which becomes feasible through short and intense FEL pulses. Almost simultaneously emitted from the illuminated target the photo-electrons can have such a high density that they interact substantially even after photoionization. This interaction results in a characteristic electron spectrum which can be interpreted as a convolution of a mean-field electron dynamics and binary electron-electron collisions. We demonstrate that this universal spectrum can be obtained analytically by summing synthetic two-body Coulomb collision events. Moreover, we propose an experiment with hydrogen clusters to observe massively parallel ionization.

引用

页数：5

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