Studies of photoionization of CF3I by femtosecond time-resolved mass spectrometry

被引：0

作者：

Yin, SH ^{[1
]}

Liu, HP ^{[1
]}

Zhang, JY ^{[1
]}

Jiang, B ^{[1
]}

Wang, L ^{[1
]}

Sha, GH ^{[1
]}

Lou, NQ ^{[1
]}

机构：

[1] Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Mol React Dynam, Dalian 116023, Peoples R China

来源：

CHINESE JOURNAL OF CHEMICAL PHYSICS | 2003年 / 16卷 / 01期

关键词：

femtosecond; pump-probe; photonionization; lifetime; ENHANCED MULTIPHOTON IONIZATION; MOLECULAR-BEAM; RYDBERG STATES; 248; NM; A-BAND; 304; PHOTODISSOCIATION; SPECTROSCOPY; DYNAMICS; ENERGY;

D O I：

暂无

中图分类号：

O64 [物理化学（理论化学）、化学物理学]; O56 [分子物理学、原子物理学];

学科分类号：

070203 ; 070304 ; 081704 ; 1406 ;

摘要：

The multi-photon dissociative photoionization dynamics of CF3I has been studied with femtosecond two-color pump-probe time of flight mass spectra at a pump pulse of 265 nm and a probe pulse of 398 nm. The life constants of CF3I+ and its fragment ions CF3+ and I+ are obtained as (96 +/- 7), (198 +/- 130) and (167 +/- 6) fs, respectively. The multi-photon dynamics leading to these ions differ. CF3I+ corresponds to a (1 + 2') transition with one-photon pump excitation to the A band of CF3I. CF3+ are mainly formed by a tow-photon probe excitation to the CF3+ with subsequent dissociation of parent ions. I+ are produced in (2 + 2') combined with (1 + 1' + 2') process. The results provide information on the multi-photon pathways involved.

引用

页码：3 / 8

页数：6

共 27 条

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