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首页> 外文期刊>Bulletin of the Chemical Society of Japan >UV and Visible Emission Spectra from the Photodissociation of Carbonyl Sulfide Using Synchrotron Radiation at 15-30 eV
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UV and Visible Emission Spectra from the Photodissociation of Carbonyl Sulfide Using Synchrotron Radiation at 15-30 eV

机译：使用同步辐射在15-30 eV下从羰基硫的光解离中获得紫外和可见发射光谱

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摘要

The photofragmentation of OCS at photon energies of 15-30 eV has been studied by dispersed fluorescence spectroscopy. The primary photon beam was monochromatized undulator radiation supplied from the UVSOR facility. The following emission-band systems have been identified: OCS~+[A~2II_#OMEGA#(0,0,0,) -> X~II_#OMEGA# -> X~2#SIGMA#~+), CS~+(B~2#SIGMA#~+ -> A~2II#OMEGA#), and CO(d~3#DELTA# -> #alpha#~3II). All of the transitions, except for OCS ~+[A~2II_#OMEGA# -> X~2II_#OMEGA#), were first observed in the vacuum UV photodissociation of OCS. The fluorescence excitation spectra for the OCS~+[A~2II_#OMEGA#(0,0,0) -> X~2II_#OMEGA#(0,0,v_3") and CS~+(B~2#SIGMA#~+ -> A~2II_#OMEGA#) transitions were measured in the photon energy range of 15.1-15.75 and 21.8-26 eV, respectively. The emission spectra obtained at 20.85 and 22.9 eV exhibit atomic transitions of S[nd~3D~o -> 4p~3P~e (n = 6-9)], which result from the neutral dissociation of superexcited Rydberg states of OCS into S(nd~3D~o) + CO. Possible excited states of the counterpart CO are discussed on the basis of the difference in the n distribution between the two spectra.
机译：通过分散荧光光谱研究了OCS在15-30 eV的光子能量下的光碎裂。初级光子束是UVSOR设施提供的单色起伏辐射器。已确定以下发射带系统：OCS〜+ [A〜2II_＃OMEGA＃（0,0,0，）-> X〜II_＃OMEGA＃-> X〜2＃SIGMA＃〜+），CS〜 +（B〜2＃SIGMA＃〜+-> A〜2II＃OMEGA＃）和CO（d〜3＃DELTA＃->＃alpha＃〜3II）。除OCS〜+ [A〜2II_＃OMEGA＃-> X〜2II_＃OMEGA＃）之外，所有跃迁都首先在OCS的真空紫外光解离中观察到。 OCS〜+ [A〜2II_＃OMEGA＃（0,0,0）-> X〜2II_＃OMEGA＃（0,0，v_3“）和CS〜+（B〜2＃SIGMA＃分别在15.1-15.75和21.8-26 eV的光子能量范围内测量了〜+-> A〜2II_＃OMEGA＃）跃迁，在20.85和22.9 eV处获得的发射光谱表现出S [nd〜3D〜 o-> 4p〜3P〜e（n = 6-9）]，这是由于OCS的超激发Rydberg态中性解离为S（nd〜3D〜o）+ CO引起的。基于两个光谱之间n分布的差异。

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