Velocity map imaging and REMPI study of the photodissociation of CH3SCH3 from the first absorption band

被引：17

作者：

Quintana, P

Delmdahl, RF

Parker, DH

Martínez-Haya, B

Aoiz, FJ ^{[1
]}

Bañares, L

Verdasco, E

机构：

[1] Univ Complutense Madrid, Fac Quim, Dept Quim Fis 1, Madrid 28040, Spain

[2] Univ Complutense Madrid, Fac Quim, CAI Espectroscopia, Madrid 28040, Spain

[3] Catholic Univ Nijmegen, Dept Mol & Laser Phys, NL-6525 ED Nijmegen, Netherlands

[4] Univ Pablo Olavide, Fac Ciencias Expt, Dept Ciencias Ambientales, Seville 41013, Spain

[5] Catholic Univ Nijmegen, Dept Mol & Laser Phys, NL-6525 ED Nijmegen, Netherlands

来源：

CHEMICAL PHYSICS LETTERS | 2000年 / 325卷 / 1-3期

关键词：

D O I：

10.1016/S0009-2614(00)00697-7

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 photodissociation of dimethyl sulfide (CH3SCH3) at 319 nm has been studied employing a combination of velocity map imaging and time-of-flight resonance-enhanced multiphoton ionization techniques to detect the CH3 products. Translational energy and recoil angle distributions as well as rotational state populations have been determined for the CH3 photofragments formed in the ground vibrational state. The electronic excitation of CH3SCH3 to the first absorption band is found to produce fast CH3S + CH3 (nu = 0) recoiling products with a negative spatial anisotropy parameter of beta = -0.85 +/- 0.05. The CH3 (nu = 0) products are rotationally cold, the rotational distribution peaking at N " = 3-4. (C) 2000 Published by Elsevier Science B.V.

引用

页码：146 / 152

页数：7

共 20 条

[1] INFRA-RED AND RAMAN SPECTRA OF DIMETHYL SULPHIDE SELENIDE AND TELLURIDE [J].