Author： Kar S.
Publisher： Springer Publishing Company
ISSN： 0177-7963
Source： Few-Body Systems, Vol.42, Iss.1-4, 2008-07, pp. : 73-81
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Abstract
The effect of screened Coulomb (Yukawa) potentials on the photodetachment cross sections of the positronium negative ion is investigated by using the asymptotic form of the bound-state wave function and a plane wave form for the final-state wave function. The required normalization constant is determined from highly accurate, completely non-adiabatic wave functions for the three-particle systems. Photodetachment cross sections for the Ps− ion are calculated for different Debye shielding lengths (
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