| 间氟溴苯分子240 nm紫外光解动力学 |
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| 引用本文： | 陈旻,梁昊,何超,赵东锋,陈旸.间氟溴苯分子240 nm紫外光解动力学[J].化学物理学报,2018,31(4):563-567. |
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| 作者姓名： | 陈旻 梁昊 何超 赵东锋 陈旸 |
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| 作者单位： | 中国科学技术大学化学物理系, 中国科学院量子信息与量子科技创新研究院, 合肥微尺度物质科学国家研究中心, 合肥 230026,中国科学技术大学化学物理系, 中国科学院量子信息与量子科技创新研究院, 合肥微尺度物质科学国家研究中心, 合肥 230026,中国科学技术大学化学物理系, 中国科学院量子信息与量子科技创新研究院, 合肥微尺度物质科学国家研究中心, 合肥 230026,中国科学技术大学化学物理系, 中国科学院量子信息与量子科技创新研究院, 合肥微尺度物质科学国家研究中心, 合肥 230026,中国科学技术大学化学物理系, 中国科学院量子信息与量子科技创新研究院, 合肥微尺度物质科学国家研究中心, 合肥 230026 |
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| 基金项目： | This work was financially supported by the National Key R&D Program of China (2017YFA0303502), the National Natural Science Foundation of China (No.21773221 and No.21727804), and the Fundamental Research Funds for the Central Universities of China. |
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| 摘 要： | The photodissociation dynamics of m-bromofluorobenzene has been experimentally investigated at around 240 nm using the DC-slice velocity map imaging technique. The kinetic energy release spectra and the recoiling angular distributions of fragmented Br(2P3/2) and Br(2P1/2) atoms from photodissociation of m-bromofluorobenzene have been measured at different photolysis wavelengths around 240 nm. The experimental results indicate that two dissociation pathways via (pre-)dissociation of the two low-lying 1ππ* excited states dominate the production process of the ground state Br(2P3/2) atoms. Because of the weak spin-orbit coupling effect among the low-lying triplet and singlet states, the spin-orbit excited Br(2P1/2) atoms are mainly produced via singlet-triplet state coupling in the dissociation step. The similarity between the present results and that recently reported for o-bromofluorobenzene indicates that the substitution position of the fluorine atom does not significantly affect the UV photodissociation dynamics of bromofluorobenzenes.
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| 收稿时间： | 2018/6/8 0:00:00 |
Ultraviolet Photodissociation Dynamics of m-Bromofluorobenzene at around 240 nm |
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| Min Chen,Hao Liang,Chao He,Dong-feng Zhao and Yang Chen.Ultraviolet Photodissociation Dynamics of m-Bromofluorobenzene at around 240 nm[J].Chinese Journal of Chemical Physics,2018,31(4):563-567. |
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| Authors: | Min Chen Hao Liang Chao He Dong-feng Zhao and Yang Chen |
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| Institution: | CAS Center for Excellence in Quantum Information and Quantum Physics, Hefei National Laboratory for Physical Sciences at the Microscale, and Department of Chemical Physics, University of Science and Technology of China, Hefei 230026, China,CAS Center for Excellence in Quantum Information and Quantum Physics, Hefei National Laboratory for Physical Sciences at the Microscale, and Department of Chemical Physics, University of Science and Technology of China, Hefei 230026, China,CAS Center for Excellence in Quantum Information and Quantum Physics, Hefei National Laboratory for Physical Sciences at the Microscale, and Department of Chemical Physics, University of Science and Technology of China, Hefei 230026, China,CAS Center for Excellence in Quantum Information and Quantum Physics, Hefei National Laboratory for Physical Sciences at the Microscale, and Department of Chemical Physics, University of Science and Technology of China, Hefei 230026, China and CAS Center for Excellence in Quantum Information and Quantum Physics, Hefei National Laboratory for Physical Sciences at the Microscale, and Department of Chemical Physics, University of Science and Technology of China, Hefei 230026, China |
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| Abstract: | |
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| Keywords: | Photodissociation dynamics Kinetic energy release spectra Spin-orbit coupling effect |
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