Photodetachment of H-- in an electric field between two parallel interfaces |
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Authors: | Wang De-Hua and Yu Yong-Jiang |
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Institution: | College of Physics and Electronic Engineering, Ludong
University, Yantai 264025, China |
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Abstract: | By using the closed orbit theory, the photodetachment cross section
of H- in a static electric field between two parallel elastic
interfaces is derived and calculated. It is found that the
photodetachment cross section depends on the electric field and the
distance between the ion and the elastic interface. The oscillation
of the cross section becomes more complicated than in the case of
H- near one elastic interface. The results show that near the
detachment threshold, the influence of the additional interface can
be neglected. But with the increase of the energy, its influence
becomes great. At some energies, the cross sections display sharp
peaks, contrasting with the staircase structure when only one
interface exists. This study provides a new understanding of the
photodetachment process of H- in the presence of external
field and interfaces. |
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Keywords: | closed-orbit theory photodetachment cross section |
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