Open AccessROTATIONAL ANALYSES OF LASER INDUCED FLUORESCENCE EXCITATION SPECTRA OF THE SUPERSONIC JET-COOLED SO2( 1A2— 1A1) SYSTEM
Author(s) -
Chuji Wang,
Jun Chen,
Tao Zhang,
Limin Zhang,
Jinghua Dai,
Congxiang Chen,
Xingxiao Ma
Publication year - 1998
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.47.1258
Subject(s) - supersonic speed , jet (fluid) , spectral line , atomic physics , excitation , laser induced fluorescence , laser , materials science , rotational spectroscopy , physics , optics , quantum mechanics , astronomy , thermodynamics
The influence of the different gas ratios (SO2/Ar) on the vibronically resolved laser-induced fluorescence excitation spectra of the SO2( 1A2— 1A1) system was investigated under the supersonic jet conditions.High resolution spectra of two complete progressions (1,m,1),(0,n,1) were obtained,in which the rotational structures of the (0,9,1),(0,10,1),(1,7,1),(1,5,1)-(0,0,0) bands were observed,for the first time,so long as we know.The assignments of 847 rotationally resolved lines were based on an asymmetric top simulation,which results in the determination of the rotational and centrifugal distortion constants of each vibrational level of state.The approximate geometry parameters of state was derived to be r(S—O)=0.160nm,∠OSO=101.64°.In addition,a discussion on the inertial defect of each vibrational level of state was presented.