| High-resolution Absorption Spectra of Acetylene in 142.8-152.3 nm |
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| 作者姓名： | 胡亚华 甄承 戴静华 周晓国 刘世林 |
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| 作者单位： | 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;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;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;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;中国科学院化学研究所分子科学国家实验室分子反应动力学实验室，北京 100190 |
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| 摘 要： | 利用双光子共振四波混频差频技术产生高分辨、可调谐的真空紫外(VUV)激光,在142.8-152.3nm波长范围内测量了超声射流冷却乙炔分子的吸收光谱. 由于射流冷却的效果和VUV激光高分辨的特性，当前的吸收光谱显示出较以往实验光谱更清晰的光谱振动峰结构，其中主要的三个振动谱峰序列对应了乙炔分子C1Ⅱu态的C-C对称伸缩振动激发(v2=0-2). 此外，148.2 nm处的肩峰则被归属为反对称弯曲振动v4的第一泛频激发，同时由于Renner-Teller效应分裂和跃迁选律的限制，当前的吸收光谱中观测到420(μ1Ⅱu)和420(к1Ⅱu)两个组分. 由此获得了各振动子带的带源位置和半高峰宽. 随着振动的激发，各振动峰逐渐加宽，能级寿命减小.
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| 关 键 词： | 乙炔，真空紫外，吸收光谱 |
| 收稿时间： | 2008/5/29 0:00:00 |
High-resolution Absorption Spectra of Acetylene in 142.8-152.3 nm |
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| Ya-hua Hu,Chen Zhen,Jing-hua Dai,Xiao-guo Zhou and Shi-lin Liu.High-resolution Absorption Spectra of Acetylene in 142.8-152.3 nm[J].Chinese Journal of Chemical Physics,2008,21(5):415-420. |
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| Authors: | Ya-hua Hu Chen Zhen Jing-hua Dai Xiao-guo Zhou and Shi-lin Liu |
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| Institution: | Hefei National Laboratory for Physical Sciences at Microscale, Department of Chemical Physics, University of Science and Technology of China, Hefei 230026, China;Hefei National Laboratory for Physical Sciences at Microscale, Department of Chemical Physics, University of Science and Technology of China, Hefei 230026, China;Hefei National Laboratory for Physical Sciences at Microscale, Department of Chemical Physics, University of Science and Technology of China, Hefei 230026, China;Hefei National Laboratory for Physical Sciences at Microscale, Department of Chemical Physics, University of Science and Technology of China, Hefei 230026, China;Hefei National Laboratory for Physical Sciences at Microscale, Department of Chemical Physics, University of Science and Technology of China, Hefei 230026, China |
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| Abstract: | |
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| Keywords: | Acetylene Vacuum ultraviolet Absorption spectrum |
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