Electron exchange model potential: Application to positronium-helium scattering

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dc.contributor.authorBiswas, P. K. [UNESP]
dc.contributor.authorAdhikari, Sadhan K. [UNESP]
dc.contributor.institutionUniversidade Estadual Paulista (UNESP)
dc.date.accessioned2022-04-28T19:54:49Z
dc.date.available2022-04-28T19:54:49Z
dc.date.issued1999-01-01
dc.description.abstractThe formulation of a suitable nonlocal model potential for electron exchange is presented, checked with electron-hydrogen and electron-helium scattering, and applied to the study of elastic and inelastic scattering and ionization of orthopositronium (Ps) by helium. The elastic scattering and the [Formula Presented] excitations of Ps are investigated using a three-Ps-state close-coupling approximation. The higher [Formula Presented] excitations and ionization of Ps atoms are treated in the framework of the Born approximation with present exchange. Calculations are reported of phase shifts and elastic, Ps excitation, and total cross sections. The present target elastic total cross section agrees well with experimental results at thermal to medium energies. © 1999 The American Physical Society.en
dc.description.affiliationInstituto de Física Teórica Universidade Estadual Paulista, São Paulo, São Paulo, 01 405-900
dc.description.affiliationUnespInstituto de Física Teórica Universidade Estadual Paulista, São Paulo, São Paulo, 01 405-900
dc.format.extent363-370
dc.identifierhttp://dx.doi.org/10.1103/PhysRevA.59.363
dc.identifier.citationPhysical Review A - Atomic, Molecular, and Optical Physics, v. 59, n. 1, p. 363-370, 1999.
dc.identifier.doi10.1103/PhysRevA.59.363
dc.identifier.issn1094-1622
dc.identifier.issn1050-2947
dc.identifier.scopus2-s2.0-0032606839
dc.identifier.urihttp://hdl.handle.net/11449/224113
dc.language.isoeng
dc.relation.ispartofPhysical Review A - Atomic, Molecular, and Optical Physics
dc.sourceScopus
dc.titleElectron exchange model potential: Application to positronium-helium scatteringen
dc.typeArtigo

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