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O2(1Δ) Yield Measurement by Raman Spectroscopy With Elimination of Chlorine Fluorescence Interference
Rong-rong Cui,Wen-bo Shi*,Lie-zheng Deng,He-ping Yang,Guo-he Sha,Cun-hao Zhang
Author NameAffiliationE-mail
Rong-rong Cui State Key Laboratory of Molecular Reaction Dynamics, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China  
Wen-bo Shi* State Key Laboratory of Molecular Reaction Dynamics, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China swb@dicp.ac.cn 
Lie-zheng Deng State Key Laboratory of Molecular Reaction Dynamics, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China  
He-ping Yang State Key Laboratory of Molecular Reaction Dynamics, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China  
Guo-he Sha State Key Laboratory of Molecular Reaction Dynamics, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China  
Cun-hao Zhang State Key Laboratory of Molecular Reaction Dynamics, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China  
Abstract:
Deleterious chlorine fluorescence was found to occur at the same frequency as the Raman scattering of O2(1Δ) and O2(3∑), seriously affecting the O2(1Δ) yield measurement in the re-action of chlorine with basic hydrogen peroxide by use of the Raman spectroscopy technique. To solve this problem we have taken advantage of the fact that Raman radiation is always strongly polarized while fluorescence is essentially non-polarized in a gaseous medium. When chlorine utilization of a singlet oxygen generator is 88%, O2(1Δ) yield reaches (42.4±7.4)% with the effect of chlorine fluorescence completely eliminated.
Key words:  Chemical oxygen iodine laser, Singlet oxygen yield, Spontaneous Raman spec-troscopy, Chlorine fluorescence
FundProject:
自发拉曼光谱法测量O2(1Δ)产率中氯气荧光干扰的消除
崔荣荣,石文波*,邓列征,杨何平,沙国河,张存浩
摘要:
利用自发拉曼光谱法测量O2(1Δ)产率的过程中发现O2(1Δ)和O2(3∑)拉曼光谱上叠加有氯气荧光光谱, 严重影响了O2(1Δ)产率的测量. 为此,利用气体分子的拉曼光谱具有偏振特性,而荧光光谱没有偏振特性的特点对测量O2(1Δ)产率的自发拉曼光谱法进行了改进. 实验结果表明,这一改进可有效消除氯气荧光干扰,使单重态氧发生器在氯气利用率为88%时的O2(1Δ)产率可很容易地被确定为(42.4±7.4)%.
关键词:  化学氧碘激光,单重态氧产率,自发拉曼光谱,氯气荧光
DOI:10.1088/1674-0068/25/02/142-146
分类号: