| 利用时间切片离子速度成像技术对AlO在193 nm的光解反应动力学研究 |
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| 引用本文： | 李芳芳,马玉杰,刘嘉兴,王冠军,王凤燕.利用时间切片离子速度成像技术对AlO在193 nm的光解反应动力学研究[J].化学物理学报,2020,33(5):649-652. |
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| 作者姓名： | 李芳芳 马玉杰 刘嘉兴 王冠军 王凤燕 |
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| 作者单位： | 复旦大学化学系，上海市分子催化和功能材料重点实验室，能源材料化学协同创新中心，上海 200438 |
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| 摘 要： | 本文利用时间切片离子速度成像技术对AlO分子在193 nm下的光解反应动力学进行了研究. 实验通过产物Al+的离子速度和角度分布分析，发现了两个光解离反应通道，分别为中性AlO分子的单光子解离生成产物Al(2Pu)+O(3Pg)的通道，和AlO分子吸收两个光子电离产生AlO+进而解离生成产物为Al+(1Sg)+O(3Pg)的反应通道. 每一个解离通道包括了AlO(v=0∽2)振动态的贡献，其中中性解离反应通道与离子解离反应通道相比，产物的各向异性参数对AlO的振动态依赖更大.
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| 关 键 词： | 时间切片离子速度成像，光解反应，AlO，振动态，193 nm |
| 收稿时间： | 2020/7/3 0:00:00 |
Photodissociation Dynamics of AlO at 193 nm using Time-Sliced Ion Velocity Imaging |
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| Fang-fang Li,Yu-jie M,Jia-xing Liu,Guan-jun Wang,Feng-yan Wang.Photodissociation Dynamics of AlO at 193 nm using Time-Sliced Ion Velocity Imaging[J].Chinese Journal of Chemical Physics,2020,33(5):649-652. |
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| Authors: | Fang-fang Li Yu-jie M Jia-xing Liu Guan-jun Wang Feng-yan Wang |
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| Institution: | Department of Chemistry and Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Collaborative Innovation Center of Chemistry for Energy Materials (iChEM), Fudan University, Shanghai
200438, China |
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| Abstract: | The photodissociation dynamics of AlO at 193 nm is studied using time-sliced ion veloc-ity mapping. Two dissociation channels are found through the speed and angular distri-butions of aluminum ions: one is one-photon dissociation of the neutral AlO to generate Al(2Pu)+O(3Pg), and the other is two-photon ionization and then dissociation of AlO+ to generate Al+(1Sg)+O(3Pg). Each dissociation channel includes the contribution of AlO in the vibrational states v=0-2. The anisotropy parameter of the neutral dissociation channel is more dependent on the vibration state of AlO than the ion dissociation channel. |
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| Keywords: | Time-sliced ion velocity imaging Photodissociation AlO Vibrational state 193 nm |
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