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Title: J-matrix calculation of electron-helium S-wave scattering

Abstract

The J-matrix approach to electron-atom scattering is revised by merging it with the Fano's multiconfiguration interaction matrix elements [U. Fano, Phys. Rev. 140, A67 (1965)]. The revised method is then applied to the S-wave model of the e-He scattering problem demonstrating remarkable computational efficiency and accuracy. In particular, the method is in complete agreement with the convergent-close-coupling elastic, 2{sup 1,3}S excitation and single ionization cross sections for impact energies in the range 0.1-1000 eV. The S-wave resonance structures in the elastic and 2{sup 1,3}S excitation cross sections are highlighted.

Authors:
; ;  [1];  [2]
  1. Discipline of Information Technology, School of Business, James Cook University, Townsville, Queensland 4811 (Australia)
  2. (Australia)
Publication Date:
OSTI Identifier:
22068709
Resource Type:
Journal Article
Journal Name:
Physical Review. A
Additional Journal Information:
Journal Volume: 84; Journal Issue: 3; Other Information: (c) 2011 American Institute of Physics; Country of input: Syrian Arab Republic; Journal ID: ISSN 1050-2947
Country of Publication:
United States
Language:
English
Subject:
74 ATOMIC AND MOLECULAR PHYSICS; 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; ACCURACY; COUPLING; CROSS SECTIONS; EFFICIENCY; ELECTRON-ATOM COLLISIONS; ELECTRONS; EV RANGE; EXCITATION; HELIUM; INTERACTIONS; IONIZATION; MATRICES; MATRIX ELEMENTS; RESONANCE; S WAVES; SCATTERING

Citation Formats

Konovalov, D. A., Fursa, D. V., Bray, I., and ARC Centre for Antimatter-Matter Studies, Curtin University, GPO Box U1987, Perth, Western Australia 6845. J-matrix calculation of electron-helium S-wave scattering. United States: N. p., 2011. Web. doi:10.1103/PHYSREVA.84.032707.
Konovalov, D. A., Fursa, D. V., Bray, I., & ARC Centre for Antimatter-Matter Studies, Curtin University, GPO Box U1987, Perth, Western Australia 6845. J-matrix calculation of electron-helium S-wave scattering. United States. doi:10.1103/PHYSREVA.84.032707.
Konovalov, D. A., Fursa, D. V., Bray, I., and ARC Centre for Antimatter-Matter Studies, Curtin University, GPO Box U1987, Perth, Western Australia 6845. Thu . "J-matrix calculation of electron-helium S-wave scattering". United States. doi:10.1103/PHYSREVA.84.032707.
@article{osti_22068709,
title = {J-matrix calculation of electron-helium S-wave scattering},
author = {Konovalov, D. A. and Fursa, D. V. and Bray, I. and ARC Centre for Antimatter-Matter Studies, Curtin University, GPO Box U1987, Perth, Western Australia 6845},
abstractNote = {The J-matrix approach to electron-atom scattering is revised by merging it with the Fano's multiconfiguration interaction matrix elements [U. Fano, Phys. Rev. 140, A67 (1965)]. The revised method is then applied to the S-wave model of the e-He scattering problem demonstrating remarkable computational efficiency and accuracy. In particular, the method is in complete agreement with the convergent-close-coupling elastic, 2{sup 1,3}S excitation and single ionization cross sections for impact energies in the range 0.1-1000 eV. The S-wave resonance structures in the elastic and 2{sup 1,3}S excitation cross sections are highlighted.},
doi = {10.1103/PHYSREVA.84.032707},
journal = {Physical Review. A},
issn = {1050-2947},
number = 3,
volume = 84,
place = {United States},
year = {2011},
month = {9}
}