Coincidence momentum imaging of ultrafast hydrogen migration in methanol and its isotopomers in intense laser fields

被引：70

作者：

Okino, Tomoya

Furukawa, Yusuke

Liu, Peng

Ichikawa, Takayuki

Itakura, Ryuji

Hoshina, Kennosuke

Yamanouchi, Kaoru

Nakano, Hidetoshi

机构：

[1] Univ Tokyo, Sch Sci, Dept Chem, Bunkyo Ku, Tokyo 1130033, Japan

[2] NTT Corp, NTT Basic Res Labs, Atsugi, Kanagawa 2430198, Japan

来源：

CHEMICAL PHYSICS LETTERS | 2006年 / 423卷 / 1-3期

关键词：

D O I：

10.1016/j.cplett.2006.03.068

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：

Two-body Coulomb explosion processes of methanol (CH3OH, CD3OH, CH3OD) in an intense laser field (0.2 pW/cm(2), 60 fs) are investigated by the coincidence momentum imaging method. The dissociation pathways with hydrogen/deuterium migration or hydrogen/deuterium exchange prior to the C-O bond breaking are securely identified. From the anisotropic angular distributions and the relative yields of the fragment ions, it is revealed that the hydrogen migration process is terminated within the period of an intense ultrashort laser pulse. A comparison of the results obtained for CH3OH and those for the isotopomers shows that the hydrogen migration is decelerated by the isotope substitution. (c) 2006 Elsevier B.V. All rights reserved.

引用

页码：220 / 224

页数：5

共 7 条

[1] Ejection of triatomic hydrogen molecular ion from methanol in intense laser fields [J].