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 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.
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.
基金
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.
