Artículos de revistas
Effect of electron correlation on positronium formation in positron-helium scattering
Fecha
1999-02-01Registro en:
European Physical Journal D. New York: Springer Verlag, v. 5, n. 2, p. 217-220, 1999.
1434-6060
10.1007/s100530050247
WOS:000078857100010
2-s2.0-0033075968
8031087349809439
Autor
Universidade Estadual Paulista (Unesp)
Visva Bharati University
Institución
Resumen
A three-parameter correlated wave function for the helium ground state is used to study the scattering reaction e(+) + He --> He+ + Ps, where Ps stands for positronium atom. An exact analytical expression is constructed for the first Born scattering amplitude for Ps formation from helium. Based on this numerical results are presented for both differential and total cross-sections. It is demonstrated that the inner electronic correlation of the target atom plays a crucial role in explaining the discrepency between theory and experiment.