Threshold law for ionization of atomic hydrogen by positron impact
- Department of Theoretical Physics, Indian Association for the Cultivation of Science, Jadavpur, Calcutta 700032 (India)
The cross section {sigma} for the positron-impact ionization of the hydrogen atom near threshold has been evaluated analytically with the final-state wave function involving three Coulomb functions. Contrary to the earlier result that {sigma} vanishes exponentially, we find the threshold law as {sigma}{approximately}{ital E}{sup 3/2}. {copyright} {ital 1996 The American Physical Society.}
- OSTI ID:
- 286615
- Journal Information:
- Physical Review A, Journal Name: Physical Review A Journal Issue: 2 Vol. 54; ISSN 1050-2947; ISSN PLRAAN
- Country of Publication:
- United States
- Language:
- English
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