Velocity map imaging of dissociative ionization of ICl in femtosecond laser field

被引：13
|
作者：
Wang, Yanmei
Zhang, Song
Wei, Zhengrong
Zhang, Bing [1 ]
机构：
[1] Chinese Acad Sci, State Key Lab Magnet Resonance & Atom & Mol Phys, Wuhan Inst Phys & Math, Wuhan 430071, Hubei, Peoples R China
[2] Chinese Acad Sci, Grad Sch, Beijing 100049, Peoples R China
来源：
CHEMICAL PHYSICS LETTERS | 2009年 / 468卷 / 1-3期
基金：
中国国家自然科学基金;
关键词：
PHOTOELECTRON-SPECTROSCOPY; ION; PHOTODISSOCIATION; SPECTRA; STATES;
D O I：
10.1016/j.cplett.2008.11.050
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
The dissociative ionization of ICl after irradiation with a femtosecond laser pulse centered at 800 nm has been investigated. The speed distributions of produced I+ ions at a series of laser intensities have been measured and analyzed by velocity map imaging method. All of them can be fitted using four Gaussian functions. Four production channels are observed for I+ fragments, which originate from dissociation of A (2)Pi(i) or B-2 Sigma(+) states when the molecule is excited above the ionization threshold by multi-photon absorption. The images have shown obvious anisotropic character along the laser polarization. (C) 2008 Elsevier B.V. All rights reserved.
引用
收藏
页码：14 / 17
页数：4
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