Doppler-free two-photon excitation spectroscopy and the Zeeman effects of the S1 1B1u(v21=1)←S0 1Ag(v=0) band of naphthalene-d8 -: art. no. 144303

被引：14

作者：

Okubo, M ^{[1
]}

Wang, JG ^{[1
]}

Baba, M ^{[1
]}

Misono, M ^{[1
]}

Kasahara, S ^{[1
]}

Katô, H ^{[1
]}

机构：

[1] Kobe Univ, Mol Photosci Res Ctr, Nada Ku, Kobe, Hyogo 6578501, Japan

来源：

JOURNAL OF CHEMICAL PHYSICS | 2005年 / 122卷 / 14期

基金：

日本学术振兴会;

关键词：

D O I：

10.1063/1.1875113

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：

Doppler-free two-photon excitation spectrum and the Zeeman effect of the S-1 B-1(1u)(v(21)=1)<- S-0 (1)A(g)(v=0) transition of naphthalene-d(8) have been measured. 908 lines of (Q(K)(a))Q(J)(Ka)K-c transition of J=0-41, K-a=0-20 were assigned, and the molecular constants of the S-1 B-1(1u)(v(21)=1) state were determined. Perturbations were observed, and those were identified as originating from Coriolis interaction. No perturbation originating from an interaction with a triplet state was observed. The Zeeman splittings for lines of a given J were observed to increase with K-c, and those of the K-c=J levels increased linearly with J. The Zeeman effects are shown to be originating from the magnetic moment of the S-1 B-1(1u) state, which is along the c axis and is induced by mixing of the S-2 B-1(3u) state to the S-1 B-1(1u) state by J-L coupling. Rotationally resolved levels were found not to be mixed with a triplet state from the Zeeman spectra. Accordingly, it is concluded that nonradiative decay of an isolated naphthalene excited to low rovibronic levels in the S-1 B-1(1u) state does not occur through the intersystem mixing. This is at variance with generally accepted understanding of the pathways of the nonradiative decay. (C) 2005 American Institute of Physics.

引用

页数：7