Alignment effects of NO in femtosecond laser field

被引：10
作者：
Guo, Wei
Zhu, Jingyi
Wang, Bingxing
Wang, Yanqiu
Wang, Li
机构：
[1] Dalian Inst Chem Phys, State Key Lab Mol React Dynam, Dalian 116023, Peoples R China
[2] Chinese Acad Sci, Grad Sch, Beijing 100049, Peoples R China
来源：
CHEMICAL PHYSICS LETTERS | 2007年 / 448卷 / 4-6期
基金：
中国国家自然科学基金;
关键词：
D O I：
10.1016/j.cplett.2007.10.016
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 laser-induced alignment effects of NO in linearly polarized femtosecond laser field within the intensity order of 10(14) W/cm(2) at 820 nm have been investigated experimentally by using velocity mapping technique. The angular and velocity distributions of fragment ions with different charge numbers are measured. The alignment degrees increased with the charge numbers, and were nearly independent of the laser intensities. Our results indicate the geometric alignment dominates before the ionization of NO into NO2+, while the dynamic alignment of the molecular ions dominates after the ionization. (C) 2007 Elsevier B.V. All rights reserved.
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页码：173 / 177
页数：5
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