| F+H2化学反应中的Feshbach共振之研究 |
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| 引用本文： | 杨学明,谢代前,张东辉.F+H2化学反应中的Feshbach共振之研究[J].物理,2006,35(6):443-446. |
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| 作者姓名： | 杨学明 谢代前 张东辉 |
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| 作者单位： | 1. 中国科学院大连化学物理研究所分子反应动力学国家重点实验室,大连,116023
2. 南京大学化学化工学院理论与计算化学研究所,南京,210093 |
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| 基金项目： | 国家研究发展基金;国家高技术研究发展计划(863计划);中国科学院知识创新工程项目;中国科学院仪器研制与改造项目;中国科学院"百人计划" |
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| 摘 要： | 化学反应共振态研究是化学动力学研究的重要前沿课题,对于理解基元化学反应的机理有重要的意义.本文中介绍了最近在这一研究方向的重大进展.通过对F＋H2化学反应的全量子态分辨的分子束反应散射实验研究,观测到了F＋H2中反应中明显的反应共振现象.通过高精度的全量子散射动力学研究,发现这一共振现象是由两个Feshbach共振态所引起的,而且这两个Feshbach共振态之间在前向散射有明显的量子干涉效应.这项研究工作使得我们对这一重要基元反应中的化学反应共振态研究向前迈进了一大步。
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| 关 键 词： | Feshbach共振 反应共振 态态反应散射 反应动力学 量子干涉效应 |
| 收稿时间： | 2006-04-11 |
| 修稿时间： | 2006-04-112006-05-26 |
Feshbach resonances in the F + H2 chemical reaction |
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| YANG Xue-Ming,XIE Dai-Qian,ZHANG Dong-Hui.Feshbach resonances in the F + H2 chemical reaction[J].Physics,2006,35(6):443-446. |
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| Authors: | YANG Xue-Ming XIE Dai-Qian ZHANG Dong-Hui |
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| Institution: | 1.State Key Laboratory of Molecular Reaction Dynamics, Dalian Institute of Chemical Physics, Chinese Academy of Sciences Dalian 116023, China;2. Institute of Theoretical and Computational Chemistry, College of Chemistry and Chemical Engineering, Nanfing University Nanjing 210093, China |
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| Abstract: | Reaction resonance is a frontier topic in chemical dynamics research, and is also essential to the understanding of mechanisms of elementary chemical reactions. In this short article, we describe an important development in this reaction direction. Experimental evidence of reaction resonances has been detected in a full quantum state resolved reactive scattering study of the F+H_2 reaction. Highly accurate full quantum scattering theoretical modeling shows that the reaction resonance is caused by two Feshbach resonance states. Further studies show that quantum interference is present between the two Feshbach resonance states for the forward scattering product. This study is a significant step forward in our understanding of chemical reaction resonances in the benchmark F+H_2 system. |
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| Keywords: | Feshbach resonance reaction resonance state-to-state reactive scattering reaction dynamics quantum interference |
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