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Laser-induced Fluorescence Spectroscopy of CoS: Identification of a New Excited State Arising from the Ground State
Jian-zheng Zang, Qun Zhang*, De-ping Zhang, Cheng-bing Qin, Qiang Zhang, Yang Chen*
Hefei National Laboratory for Physical Sciences at the Microscale, and Department of Chemical Physics, University of Science and Technology of China, Hefei 230026, China
Abstract:
Laser-induced fluorescence excitation spectra and dispersed fluorescence spectra of cobalt sulfide (CoS) have been recorded in the energy range of 22400-24400 cm-1 (corresponding to 446-409 nm). A new electronic transition progression with six vibronic bands, stemming from the X47/2 state of CoS, was identified and assigned to be [24.00]47/2-X47/2. The new observed 4△ state most probably originates from the core[10σ2][4π3][11σ2][1δ3][5π3] electronic configuration. Strong perturbations are found to extensively exist in the transition bands of this new state. The rotational constants and lifetimes of these bands have been determined
Key words:  CoS, Laser-induced fluorescence, Dispersed fluorescence, Perturbation among states
FundProject:
硫化钴的激光诱导荧光光谱:一个来自基态的新激发态
臧建正, 张群*, 张德萍, 秦成兵, 张强, 陈旸*
中国科学技术大学合肥微尺度物质科学国家实验室,化学物理系,合肥230026
摘要:
采用激光诱导荧光技术在22400~24400 cm-1研究了超声射流冷却下的硫化钴光谱,获得了一个包含六个振动带的电子跃迁序列,该电子跃迁序列为:[24.00]47/2-X47/2.新的电子态的电子组态很可能是core[10σ2][4π3][11σ2][1δ3][5π3],该电子态的所有的振动谱带都受到了其他电子态的严重微扰,通过转动分析得到了这些谱带的转动常数,同时也测量了这些谱带的寿命
关键词:  硫化钴,激光诱导荧光,色散荧光,电子态间的微扰
DOI:10.1063/1674-0068/26/06/701-704
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