Electron exchange model potential: Application to positronium helium scattering
Contribuinte(s) |
Universidade Estadual Paulista (UNESP) |
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Data(s) |
20/05/2014
20/05/2014
01/01/1999
|
Resumo |
The 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 n=2 excitations of Ps are investigated using a three-Ps-state close-coupling approximation. The higher (n greater than or equal to 3) 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. [S1050-2947(99)04201-8]. |
Formato |
363-370 |
Identificador |
http://dx.doi.org/10.1103/PhysRevA.59.363 Physical Review A. College Pk: American Physical Soc, v. 59, n. 1, p. 363-370, 1999. 1050-2947 http://hdl.handle.net/11449/23818 10.1103/PhysRevA.59.363 WOS:000078111500054 WOS000078111500054.pdf |
Idioma(s) |
eng |
Publicador |
American Physical Soc |
Relação |
Physical Review A |
Direitos |
closedAccess |
Tipo |
info:eu-repo/semantics/article |