Near-infrared femtosecond laser ionization of the acetic acid dimer

被引：10

作者：

Amada, Mai ^{[1
]}

Sato, Yasuha ^{[1
]}

Tsuge, Masashi ^{[2
]}

Hoshina, Kennosuke ^{[1
]}

机构：

[1] Niigata Univ Pharm & Appl Life Sci, Fac Pharmaceut Sci, Akiha Ku, Niigata 9568603, Japan

[2] Natl Chiao Tung Univ, Dept Appl Chem, Hsinchu 30010, Taiwan

来源：

CHEMICAL PHYSICS LETTERS | 2015年 / 624卷

基金：

日本学术振兴会;

关键词：

HYDROGEN MOLECULAR-IONS; COULOMB EXPLOSION; POLYATOMIC-MOLECULES; MIGRATION; METHANOL; EJECTION; FIELDS;

D O I：

10.1016/j.cplett.2015.02.007

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：

Fragment ions produced after the ionization of the acetic acid dimer (CH3COOH)(2) in a near-infrared intense femtosecond laser field were measured using time-of-flight mass spectrometry. The two-body Coulomb explosion (CE) process (CH3COOH)(2)(2+) -> 2CH(3)COOH(+) with a kinetic energy release of 3.4 eV, similar to the case of (HCOOH)(2)(2+) (Hoshina et al., 2012), was identified. The two-body CE of (CH3COOH)(2)(2+) was induced when the laser polarization direction was perpendicular to the C center dot center dot center dot C intermolecular axisin contrast to the case of (HCOOH)(2)(2+). The preferential configurations may be those that deform dimer structures close to dimer dications during the double-ionization process. (C) 2015 Elsevier B.V. All rights reserved.

引用

页码：24 / 28

页数：5

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