Predissociation dynamics of the B state of CH3I by femtosecond pump-probe technique

被引：19
|
作者：
Wang, Yanmei
Shen, Huan
Hua, Linqiang
Hu, Changjin
Zhang, Bing [1 ]
机构：
[1] Chinese Acad Sci, Wuhan Inst Phys & Math, State Key Lab Magnet Resonance & Atom & Mol Phys, Wuhan Natl Lab Optoelect, Wuhan 430071, Hubei, Peoples R China
来源：
OPTICS EXPRESS | 2009年 / 17卷 / 13期
基金：
中国国家自然科学基金;
关键词：
ATOMIC-SCALE DYNAMICS; METHYL-IODIDE; PHOTOELECTRON-SPECTROSCOPY; SURFACE CROSSINGS; RYDBERG STATES; PHOTODISSOCIATION; FEMTOCHEMISTRY; (B)OVER-TILDE; LIFETIMES; VELOCITY;
D O I：
10.1364/OE.17.010506
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
The laser induced predissociation dynamics of the B Rydberg state of CH3I following two-photon absorption of a pump pulse was studied with femtosecond pump-probe photoelectron imaging coupled with time-resolved mass spectroscopy. The predissociation lifetime was measured to be 1.55 ps induced by the crossing between the B state and the repulsive A-band. Two possible predissociation channels were observed originating from (a) direct coupling between the B state and the repulsive (3)Q(0) state and (b) a second crossing between the (3)Q(0) and (1)Q(1) states after the coupling between the B and (3)Q(0) states, respectively. (C) 2009 Optical Society of America
引用
收藏
页码：10506 / 10513
页数：8
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