| 直流放电制备CN自由基及其LIF探测 |
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| 引用本文： | 谭晓峰,董峰,陈宏,李学初.直流放电制备CN自由基及其LIF探测[J].物理化学学报,1998,14(7):664-668. |
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| 作者姓名： | 谭晓峰 董峰 陈宏 李学初 |
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| 作者单位： | State Key Laboratory of Molecular Reaction Dynamics Dalian Institute of Chemical Physics,Chinese Academy of Sciences,Dalian 116023 |
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| 摘 要： | CN自由基是研究化学反应动力学的典型自由基，CN的动力学行为，如CN＋O2的反应已成为研究自由基－自由基反应的模型体系1]，同时也在许多实际过程如燃烧过程，星际气体的形成过程中起着重要的作用2，3]．利用含有CN的化合物进行光解、放电、与亚稳态原子分子进行传能反应是目
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| 关 键 词： | CN自由基 激光诱导荧光 分子束 偏振 直流冷阴极放电 |
| 收稿时间： | 1997-10-08 |
| 修稿时间： | 1998-01-24 |
Formation of CN Radical by DC Discharge of CH_3CN and LIF Measurement |
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| Tan Xiaofeng, Dong Feng, Chen Hong ,Li Xuechu.Formation of CN Radical by DC Discharge of CH_3CN and LIF Measurement[J].Acta Physico-Chimica Sinica,1998,14(7):664-668. |
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| Authors: | Tan Xiaofeng Dong Feng Chen Hong Li Xuechu |
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| Institution: | State Key Laboratory of Molecular Reaction Dynamics Dalian Institute of Chemical Physics,Chinese Academy of Sciences,Dalian 116023 |
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| Abstract: | Jet cooled CN radical beam was formed by cold cathode DC discharge of CH3CNunder molecular beam conditions. The cylindrical cold cathode was placed between the skimmerand the nozzle to prevent the nozzle from being clogged by carbon particles. The pulsed photoncounting LIF measurement was seriously jeopardized by the high intensive scattering laser lightdue to CN(B2Z)'s short lifetime (70ns) and weak fiuorescence. By using an attenuator to reducelaser intensity or a polaroid to reduce the scattering laser intensity, we obtained LIF spectra withgood S/N ratio. With the theoretical simulasd spectra, the effects of laser p0larization on LIFwere discussed and the relative populations of CN rotational and vibrational states were obtained. |
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| Keywords: | CN radical Laser induced fluorescence Molecular beam Polarization Coldcathode DC discharge |
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