| Photodetachment of a Negative Hydrogen Molecular Ion near an Interface |
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| 引用本文： | 王德华. Photodetachment of a Negative Hydrogen Molecular Ion near an Interface[J]. 中国物理快报, 2007, 24(2): 400-403 |
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| 作者姓名： | 王德华 |
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| 作者单位： | College of Physics and Electronic Engineering, Ludong University, Yantai 264025 |
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| 基金项目： | Supported by the National Natural Science Foundation of China under Grant No 106040457 and the Doctoral Scientific Research Startup Foundation of Ludong University under Grant No 202-23000301. |
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| 摘 要： | Photodetachment of a negative hydrogen molecular ion near an interface is studied by using the two-centre model and the closed orbit theory. The calculation results show that the photodetachment cross section is related to the distance between the two centres in the H2- and different molecular ion-interface distances. The comparison between the cross section of H2- near an interface with the section of Hˉ shows that at the equilibrium distance of two centres and at low photon energy, the photodetachment cross section of H2- is about twice the cross section of Hˉ, which shows that the interference of the two nuclei is very strong; when the distance between the two centres is large, the section of H2- is almost the same as the cross section of Hˉ near one interface, which indicates that the interference effect of the two centres anishes.
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| 关 键 词： | 光致分离 氢分子 界面 轨道理论 |
| 收稿时间： | 2006-10-11 |
| 修稿时间： | 2006-10-11 |
Photodetachment of a Negative Hydrogen Molecular Ion near an Interface |
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| WANG De-Hua. Photodetachment of a Negative Hydrogen Molecular Ion near an Interface[J]. Chinese Physics Letters, 2007, 24(2): 400-403 |
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| Authors: | WANG De-Hua |
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| Affiliation: | College of Physics and Electronic Engineering, Ludong University, Yantai 264025 |
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| Abstract: | Photodetachment of a negative hydrogen molecular ion near an interface is studied by using the two-centre model and the closed orbit theory. The calculation results show that the photodetachment cross section is related to the distance between the two centres in the H2^- and different molecular ion-interface distances. The comparison between the cross section of H2^- near an interface with the section of H^- shows that at the equilibrium distance of two centres and at low photon energy, the photodetachment cross section of H2^- is about twice the cross section of H^-, which shows that the interference of the two nuclei is very strong; when the distance between the two centres is large, the section of H2^- is almost the same as the cross section of H^- near one interface, which indicates that the interference effect of the two centres vanishes. |
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| Keywords: | 34.50.Dy 32.80.Gc 03.65.Sq |
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