三原子分子离子的光激发和光解离动力学研究

doi:10.7523/j.issn.2095-6134.2010.3.001

摘要/Abstract

摘要：

综述了近几年来关于三原子分子离子(CS⁺₂, SO⁺₂, CO⁺₂)的光激发和光解离动力学研究结果.实验是在射流气束条件下进行的.首先利用一束电离激光使中性三原子分子通过共振增强多光子电离制备出振动态选择的三原子分子离子,再用一束或两束解离激光激发获得母体分子离子的光解离谱(母体离子的凹陷谱和碎片离子的增强谱).由此研究了三原子分子离子(CS⁺₂, SO⁺₂, CO⁺₂)电子态的光激发和光解离动力学.

关键词: CS⁺₂, SO⁺₂, CO⁺₂, 共振增强多光子电离, 光解离谱

Abstract:

The recent achievements in the photo-excitation and photo-dissociation dynamics research on the triatomic molecular ions (CS⁺₂, SO⁺₂, CO⁺₂) are reviewed. The parent ions with selected vibrational states are prepared via resonance-enhanced multiphoton ionization (REMPI) of neutral molecules by using an ionization laser, and then the photo-dissociation spectra (the depletion spectra of the parent ions and the enhanced spectra of fragment ions) are obtained by using another one or two dissociation lasers overlapped temporally and spatially with the ionization laser. Based on photo-dissociation spectra the photo-excitation and the photo-dissociation dynamics of CS⁺₂, SO⁺₂, CO⁺₂ are investigated.

Key words: CS⁺₂, SO⁺₂, CO⁺₂, REMPI, photo-dissociation spectrum

中图分类号:

O644

张立敏. 三原子分子离子的光激发和光解离动力学研究[J]. 中国科学院大学学报, 2010, 27(3): 289-305.

ZHANG Li-Min. Photo-excitation and photo-dissociation dynamics studies of triatomic molecular ions[J]. , 2010, 27(3): 289-305.

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