Optical-optical double resonance probe of the dark state of thiophosgene in supersonic free jet

被引：7

作者：

Fujiwara, T

Moule, DC

Lim, EC

机构：

[1] Univ Akron, Dept Chem, Akron, OH 44325 USA

[2] Univ Akron, Ctr Laser & Opt Spect, Akron, OH 44325 USA

[3] Brock Univ, Dept Chem, St Catharines, ON L2S 3A1, Canada

来源：

CHEMICAL PHYSICS LETTERS | 2004年 / 389卷 / 1-3期

基金：

加拿大自然科学与工程研究理事会;

关键词：

D O I：

10.1016/j.cplett.2004.03.093

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：

One-photon excitation of the S-0 ((X) over tilde) thiophosgene to the S-1 ((A) over tilde) state, followed by photodepletion of the S-1 -->S-0 fluorescence by Sn (n = 2, 3) <-- S-1 excitation, by another photon, reveals the presence of a dark S-3 ((C) over tilde) state in the vicinity of the (B) over tilde (1)A(1) (pipi*), S-2, state. The measured polarization and the vibrational structure of the (C) over tilde <-- (A) over tilde absorption are consistent with the (C) over tilde state being the B-1(2) (nsigma*) state, predicted by the CASSCF calculations of Strickler and Gruebele [Chem. Phys. Lett. 349 (2001) 1371]. The dominant decay channel of the (C) over tilde B-1(2)(nsigma*) state is shown to be the direct internal conversion to the (X) over tilde (1)A(1) state. (C) 2004 Elsevier B.V. All rights reserved.

引用

收藏

页码：165 / 170

页数：6

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