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Author Mapleton, R. A.
Source United States Department of Energy Office of Scientific and Technical Information
Content type Text
Language English
Subject Keyword PHYSICS ♦ ATOMS ♦ BORN APPROXIMATION ♦ COLLISIONS ♦ CROSS SECTIONS ♦ ELECTRIC CHARGES ♦ ELECTRIC POTENTIAL ♦ ELECTRONS ♦ HYDROGEN ♦ IONS ♦ MATRICES ♦ PERTURBATION THEORY ♦ PRODUCTION ♦ QUANTUM MECHANICS ♦ SCATTERING
Abstract The post matrix element form of Born's approximation is used to calculate the cross section for H/sup -/(1s/sup 2/) production in hydrogen atom collisions. The Coulomb wave function is approximated by a plane wave, and two different wave functions derived by Chandrasekhar, one of which contains the inter-electron distance, are used for the H/sup -/ state. The value of the cross section obtained with the wave function containing the interelectron distance term is roughly 25% larger than the other cross section. Since the direct and exchange charge transfer amplitudes, f/sub s/( theta ) and f/sub s/( pi - theta ), are sharply peaked about theta = 0 and theta = pi , respec tively, the interference terms are negligible. Thus, only f/sub s/( theta ) has to be calculated to obtain the cross section. (auth)
ISSN 0031899X
Educational Use Research
Learning Resource Type Article
Publisher Date 1960-01-15
Publisher Department Air Force Cambridge Research Center, Bedford, Mass.
Journal Physical Review
Volume Number 117
Organization Air Force Cambridge Research Center, Bedford, Mass.


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