Revisión

 

Theoretical study of e^– -He scattering using the Schwinger variational principle with plane waves as a trial basis set

 

J.L.S. Lino and G.G.Z. Torres

 

Nucleo de Pesquisas em Matematica e Matematica Aplicada-Nupemap, Universidade Braz Cubas UBC, Campus I, 08773-380, Mogi das Cruzes, São Paulo, Brazil.

 

Recibido el 11 de diciembre de 2002.
Aceptado el 19 de febrero de 2004.

 

Abstract

We report an application of the Schwinger variational principle with plane waves as a trial basis set. Differential cross sections are obtained for e^– -He from 15 to 100 eV. Our differential cross is found to be in reasonable agreement with experimental data.

Keywords: Schwinger; electron.

 

Resumen

Se analiza una aplicación del principio variacional de Schwinger desde la perspectiva de ondas planas para un cunjunto base. El proposito de este trabajo es mostrar la seccion eficaz deferencial para e^– -He en el intervalo de 15 to 100 eV. Los resultados se comparan con los experimentos.

Descriptores: Schwinger; electron.

 

PACS: 34.80.Bm

 

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Acknowledgments

The author JLSL wants to express his gratitute for frutiful scientific interaction and collaboration with Dr M. A. P. Lima. The authors would like to thank Dr. A. Eiras for insightful discussions. Part of these calculations were performed at Centro Nacional de Processamento de Alto Desempenho de Sao Paulo (CENAPAD-SP) e do Nordeste (CENAPADNE). Financial support by the UBC contract APEO (matematica)/2001/02 is also gratefully acknowledged.

 

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