INFLUENCE OF HELIUM SURFACE ON PHOTODETACHMENT OF NEGATIVE IONS

Guangcan Yang (), Ningyu Yang and Kuikui Rui
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Guangcan Yang: School of Physics and Electronic Information, Wenzhou University, Wenzhou 325035, P. R. China
Ningyu Yang: School of Physics and Electronic Information, Wenzhou University, Wenzhou 325035, P. R. China
Kuikui Rui: School of Physics and Electronic Information, Wenzhou University, Wenzhou 325035, P. R. China

Surface Review and Letters (SRL), 2009, vol. 16, issue 06, 935-940

Abstract: The photodetachment ofH-on the surface of helium is investigated by quantum and semiclassical Green function approaches. It is found that a new sinusoidal oscillation is introduced in the photodetachment cross-section because of the existence of helium surface. Both quantum and semiclassical approaches give similar results but with minor difference when the photon energy is higher than the surface potential. The new oscillation is formed due to transmissions and reflections of the photodetached electronic waves on helium surface. It provides a simple system to test quantum reflection.

Keywords: Green function method; helium; photodetachment; 73.21.-b; 73.43.Lp; 32.60.+i (search for similar items in EconPapers)
Date: 2009
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DOI: 10.1142/S0218625X09013323

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