原子与分子物理学报2016，Vol.33Issue(6)：957-962,6.DOI:10.3969/j.issn.1000-0364.2016.12.001
基于共振增强多光子电离技术的慢电子速度影像应用
Application of slow electron velocity map imaging based on resonance enhanced multiphoton ionization
摘要
Abstract
The utilization of resonance enhanced multiphoton ionization( REMPI) spectra allows us not only to in-vestigate the vibrational structure of the intermediate states in neutral species, but also to acquire the high resolu-tion photoelectron spectra. Three-photon ionization process of Xe atom at 258. 00 nm laser wavelength was in-vestigated by using home-made double electrostatic -lens optics. A mass resolution ( m/Δm ) of ~1300 for Time of Flight Mass Spectrometer ( TOFMS ) , electron energy resolution (ΔE/E ) of 2. 4% for Velocity-map imaging ( VMI) and the energy resolution near threshold photon <1 meV have been achieved. The REMPI spec-trum of benzene in the excited state and slow electron velocity-map imaging spectra of benzene in the cation are obtained by the optimum parameters. The vibronic levels of 1 B2u excited state and the vibrational structure of ben-zene cation are assigned unambiguously.关键词
静电透镜/速度成像/共振增强多光子电离Key words
Electrostatic-lens optics/Velocity-map imaging/Resonance enhanced multiphoton ionization分类
化学化工引用本文复制引用
王辉,马乃玉,曲泽华,秦正波,郑贤锋,姚关心,张先燚,崔执凤..基于共振增强多光子电离技术的慢电子速度影像应用[J].原子与分子物理学报,2016,33(6):957-962,6.基金项目
国家自然基金(21503003) （21503003）
国家自然基金(11674003) （11674003）
国家自然基金(61475001) （61475001）
