| 离子速度成像技术研究2-溴戊烷的光解离动力学 |
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| 引用本文： | 顾忠,陈旻,何超,白西林,茆锐,张群,陈旸.离子速度成像技术研究2-溴戊烷的光解离动力学[J].化学物理学报,2013,26(5):493-497. |
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| 作者姓名： | 顾忠 陈旻 何超 白西林 茆锐 张群 陈旸 |
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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(筹), 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(筹), 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(筹), 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(筹), 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(筹), 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(筹), 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(筹), 化学物理系，合肥230026 |
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| 摘 要： | 运用离子速度成像技术研究了2-溴戊烷分子在～234 nm处的光解离动力学. 通过分析光解产物Br(2P3/2)(简称Br)和Br(2P1/2) (简称Br*)的速度影像，分别得到其速度分布和角度分布. Br和Br*的速度分布可以用两个高斯分布拟合，分别对应于2-溴戊烷在～234 nm处两个独立的光解离反应通道. 高能的高斯分量对应于C-Br伸缩振动模式的直接解离，低能的高斯分量对应于弯曲振动和C-Br伸缩振动耦合所导致的解离. 确定出光解离产物Br的相对量子产率为0.892，结合Br和Br*碎片的各项异性参数和溴原子的相对量子产率，讨论了3Q0、3Q1和1Q1激发态分别对产物Br和Br*的贡献. 通过对比溴代戊烷4种同分异构体光解离过程的差异，讨论了分子烷基分支化对光解机理的影响.
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| 关 键 词： | 离子速度成像，光解离，2-溴戊烷 |
| 收稿时间： | 5/9/2013 12:00:00 AM |
Using Ion-velocity Map Imaging Technique to Study Photodissociation of 2-Bromopentane |
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| Zhong Gu,Min Chen,Chao He,Xi-lin Bai,Rui Mao,Qun Zhang and Yang Chen.Using Ion-velocity Map Imaging Technique to Study Photodissociation of 2-Bromopentane[J].Chinese Journal of Chemical Physics,2013,26(5):493-497. |
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| Authors: | Zhong Gu Min Chen Chao He Xi-lin Bai Rui Mao Qun Zhang and Yang Chen |
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| Institution: | Hefei National Laboratory for Physical Sciences at the Microscale and Department of Chemical Physics, University of Science and Technology of China, Hefei 230026, China;Hefei National Laboratory for Physical Sciences at the Microscale and Department of Chemical Physics, University of Science and Technology of China, Hefei 230026, China;Hefei National Laboratory for Physical Sciences at the Microscale and Department of Chemical Physics, University of Science and Technology of China, Hefei 230026, China;Hefei National Laboratory for Physical Sciences at the Microscale and Department of Chemical Physics, University of Science and Technology of China, Hefei 230026, China;Hefei National Laboratory for Physical Sciences at the Microscale and Department of Chemical Physics, University of Science and Technology of China, Hefei 230026, China;Hefei National Laboratory for Physical Sciences at the Microscale and Department of Chemical Physics, University of Science and Technology of China, Hefei 230026, China;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: | Ion-velocity imaging Photodissociation 2-Bromopentane |
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