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Photodetachment of a Negative Hydrogen Molecular Ion near an Interface |
| WANG De-Hua |
| College of Physics and Electronic Engineering, Ludong University, Yantai 264025 |
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| Cite this article: |
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WANG De-Hua 2007 Chin. Phys. Lett. 24 400-403 |
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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 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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| Keywords:
34.50.Dy
32.80.Gc
03.65.Sq
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Received: 11 October 2006
Published: 24 February 2007
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