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超声冷却SO2( 1A2— 1A1)激光诱导荧光激发谱的转动分析

王储记 陈 军 张立敏 戴静华 陈从香 马兴孝

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超声冷却SO2( 1A2— 1A1)激光诱导荧光激发谱的转动分析

王储记, 陈 军, , 张立敏, 戴静华, 陈从香, 马兴孝

ROTATIONAL ANALYSES OF LASER INDUCED FLUORESCENCE EXCITATION SPECTRA OF THE SUPERSONIC JET-COOLED SO2( 1A2— 1A1) SYSTEM

WANG CHU-JI, CHEN JUN, ZHANG TAO, ZHANG LI-MIN, DAI JING-HUA, CHEN CONG-XIANG, MA XING-XIAO
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  • 通过改变SO2/Ar配比,研究了超声膨胀冷却SO2( 1A2— 1A1)系统315—330nm波段振动分辨的激光诱导荧光(LIF)激发谱.获得了属于两个完整带系(1,m,1),(0,n,1)—(0,0,0)的高分辨转动结构谱.其中(ν′1,ν′2,ν′3)=(0,9,1),(0,10,1),(1,7,1),(1
    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.
    • 基金项目: 国家九五攀登计划“分子反应动态学和原子分子激发态”和国家自然科学基金(批准号:29773043)资助的课题.
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  • 文章访问数:  5957
  • PDF下载量:  705
  • 被引次数: 0
出版历程
  • 收稿日期:  1997-11-03
  • 修回日期:  1998-01-19
  • 刊出日期:  1998-04-05

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