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Type: Artigo de periódico
Title: Zeff According To The Schwinger Multichannel Method In Positron Scattering
Author: Da Silva E.P.
Germano J.S.E.
Lima M.A.P.
Abstract: We use the wave function from the Schwinger multichannel method to calculate Zeffan annihilation parameter of positron-atom (or molecule) scattering. These Zeff are evaluated from the (N+1)-particle wave function and are calculated in a fully ab initio way (in a quantum chemistry sense). Our first applications are for positron scattering against He atoms and H2 molecules. Our results for both systems are in excellent agreement with experimental data at thermal energies. © 1994 The American Physical Society.
Rights: aberto
Identifier DOI: 10.1103/PhysRevA.49.R1527
Date Issue: 1994
Appears in Collections:Unicamp - Artigos e Outros Documentos

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