| Production of CH （A2△） by multi-photon dissociation of （CH3）2CO,CH3NO2, CH2Br2, and CHBr3 at 213 nm |
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| 引用本文： | 李胜强,许亮,陈扬骎,邓联忠,印建平.Production of CH （A2△） by multi-photon dissociation of （CH3）2CO,CH3NO2, CH2Br2, and CHBr3 at 213 nm[J].中国物理 B,2014(8):327-332. |
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| 作者姓名： | 李胜强 许亮 陈扬骎 邓联忠 印建平 |
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| 作者单位： | State Key Laboratory of Precision Spectroscopy, Department of Physics, East China Normal University, Shanghai 200062, China |
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| 基金项目： | Project supported by the National Natural Science Foundation of China(Grant Nos.10674047,10804031,10904037,10904060,10974055,11034002,11274114,and 61205198);the National Key Basic Research and Development Program of China(Grant Nos.2006CB921604 and 2011CB921602);the Basic Key Program of Shanghai Municipality,China(Grant No.07JC14017);the Fundamental Research Funds for the Central Universities;the Shanghai Leading Academic Discipline Project,China(Grant No.B408) |
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| 摘 要： | In order to realize electrostatic Stark deceleration of CH radicals and study cold chemistry, the fifth harmonic of a YAG laser is used to prepare CH(A2△) molecules through using the multi-photon dissociation of(CH3)2CO, CH3NO2, CH2Br2,and CHBr3 at ～ 213 nm. The CH product intensity is measured by using the emission spectrum of CH(A2△→ X2Π). The dependence of fluorescence intensity on laser power is studied, and the probable dissociation channels are analyzed. The relationship between the fluorescence intensity and some parameters, such as the temperature of the beam source, stagnation pressure, and the time delay between the opening of pulse valve and the photolysis laser, are also studied. The influence of three different carrier gases on CH signal intensity is investigated. The vibrational and rotational temperatures of the CH(A2△) product are obtained by comparing experimental data with the simulated ones from the LIFBASE program.
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| 关 键 词： | fifth harmonic of YAG laser photodissociation emission spectrum |
Production of CH （A2△） by multi-photon dissociation of （CH3）2CO,CH3NO2, CH2Br2, and CHBr3 at 213 nm |
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| 《Chinese Physics》.Production of CH （A2△） by multi-photon dissociation of （CH3）2CO,CH3NO2, CH2Br2, and CHBr3 at 213 nm[J].Chinese Physics B,2014(8):327-332. |
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| Authors: | 《Chinese Physics》 |
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| Abstract: | fifth harmonic of YAG laser, photodissociation, emission spectrum |
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| Keywords: | fifth harmonic of YAG laser photodissociation emission spectrum |
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