Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/64523
Type: Artigo de periódico
Title: ELECTRONIC EXCITATION OF H-2 BY POSITRON-IMPACT - AN APPLICATION OF THE SCHWINGER MULTICHANNEL METHOD
Author: LINO, JLS
GERMANO, JSE
LIMA, MAP
Abstract: In this paper we report integral and differential cross sections for positron-impact excitation of the X 1SIGMA(g)+ --> B 1SIGMA(u)+ transition in H-2 for collision energies of 13.5, 15, 17.5, 20, 25 and 30 eV. These cross sections were derived from fixed-nuclei scattering amplitudes in such a way that low angular-momentum components are obtained using the Schwinger multichannel method and the large ones are treated by the first Born approximation. To our knowledge, up to date no experimental data are available for comparison. Our results differ from previous theoretical results of Mukherjee and co-workers. We discuss possible reasons for this disagreement.
Country: Inglaterra
Editor: Iop Publishing Ltd
Rights: fechado
Identifier DOI: 10.1088/0953-4075/27/9/023
Date Issue: 1994
Appears in Collections:Unicamp - Artigos e Outros Documentos

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