Rare-Gas Clusters in Intense Extreme-Ultraviolet Pulses from a High-Order Harmonic Source

被引：53
|
作者：
Schuette, B. [1 ]
Arbeiter, M. [2 ]
Fennel, Th [2 ]
Vrakking, M. J. J. [1 ]
Rouzee, A. [1 ]
机构：
[1] Max Born Inst, D-12489 Berlin, Germany
[2] Univ Rostock, Inst Phys, D-18051 Rostock, Germany
来源：
PHYSICAL REVIEW LETTERS | 2014年 / 112卷 / 07期
关键词：
FREE-ELECTRON LASER; ISOLATED ATTOSECOND PULSES; IONIZATION; OPERATION;
D O I：
10.1103/PhysRevLett.112.073003
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
We report evidence for two previously unidentified effects in the ionization of rare-gas clusters by intense extreme-ultraviolet pulses. First, electron spectra indicate multistep photoemission with increasing isotropy for larger clusters due to electron-atom collisions. Second, very slow (meV) electrons are interpreted as the first experimental evidence for Rydberg-like atomic state formation in the nanoplasma expansion. Only small fractions of Xe2+ ions were found, in sharp contrast to previous results recorded under comparable conditions [Murphy et al., Phys. Rev. Lett. 101, 203401 (2008)].
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页数：5
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