| 用共振增强多光子电离方法研究几种含溴化合物的光解 |
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| 引用本文： | 张秀,张冰. 用共振增强多光子电离方法研究几种含溴化合物的光解[J]. 化学学报, 2006, 64(7): 599-604 |
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| 作者姓名： | 张秀 张冰 |
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| 作者单位： | 孝感学院物理系,孝感,432000;中国科学院武汉物理与数学研究所,武汉,430071 |
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| 基金项目： | 湖北省自然科学基金(No.2004ABA092)资助项目. |
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| 摘 要： | 利用飞行时间质谱仪(TOF)和共振增强多光子电离(REMPI)方法, 研究了两种正一溴代烷烃(C2H5Br, n-C3H7Br)和溴苯(C6H5Br)在234及267 nm附近的光解. 测出了这几种含溴化合物在不同波长下光解产物Br*和Br的分支比N(Br*)/N(Br), 并根据从头计算结果, 解释了这几种含溴化合物光解产物的分支比随光解波长变化的趋势及几个低激发态势能面之间的关系.
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| 关 键 词： | 共振增强多光子电离 光解 分支比 含溴化合物 |
| 收稿时间： | 2005-08-26 |
| 修稿时间： | 2005-08-262005-12-02 |
Investigations of Photodissociation of Some Bromides Using Resonance-enhanced Multiphoton Ionization |
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| ZHANG,Xiu,ZHANG,Bing. Investigations of Photodissociation of Some Bromides Using Resonance-enhanced Multiphoton Ionization[J]. Acta Chimica Sinica, 2006, 64(7): 599-604 |
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| Authors: | ZHANG Xiu ZHANG Bing |
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| Affiliation: | (1 Department of Physics, Xiaogan University, Xiaogan 432000)(2 Wuhan Institute of Physics and Mathematics, Chinese Academy of Sciences, Wuhan 430071) |
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| Abstract: | Using time-of-flight mass spectroscopy and resonance-enhanced multiphoton ionization (REMPI) scheme, the photodissociation of two alkyl bromides (C2H5Br, n-C3H7Br) and bromobenzene (C6H5Br) near 234 and 267 nm was investigated. The branching ratios N(Br*)/N(Br) of the compounds at two wavelengths were measured, and the relationships between the branching ratio and the photolysis wave-lengths and among the potential energy surfaces of the low excited states were explained based on our ab initio calculations. |
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| Keywords: | resonance-enhanced multiphoton ionization photodissociation branching ratio bromide |
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