Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/98314
Type: Artigo de periódico
Title: Studies Of Electron-molecule Collisions: Applications To E-h2o
Author: Brescansin L.M.
Lima M.A.P.
Gibson T.L.
McKoy V.
Huo W.M.
Abstract: We report elastic differential and momentum transfer cross sections for the elastic scattering of electrons by H2O for collision energies from 2 to 20 eV. These fixed-nuclei static-exchange cross sections were obtained using the Schwinger variational approach. In these studies the exchange potential is directly evaluated and not approximated by local models. The calculated differential cross sections, obtained with a basis set expansion of the scattering wave function, agree well with available experimental data at intermediate and larger angles. As used here, the results cannot adequately describe the divergent cross sections at small angles. An interesting feature of the calculated cross sections, particularly at 15 and 20 eV, is their significant backward peaking. This peaking occurs in the experimentally inaccessible region beyond a scattering angle of 120°. The implication of this feature for the determination of momentum transfer cross sections is described. © 1986 American Institute of Physics.
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Address: http://www.scopus.com/inward/record.url?eid=2-s2.0-0041346860&partnerID=40&md5=80ce0cde7657fcd8e632e31b7eaa9d37
Date Issue: 1986
Appears in Collections:Unicamp - Artigos e Outros Documentos

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