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2014 | 12 | 3 | 192-202
Tytuł artykułu

Four-body treatment of the K-shell positronium formation from multi-electron atoms

Treść / Zawartość
Warianty tytułu
Języki publikacji
EN
Abstrakty
EN
The four-body Coulomb-Born distorted-wave approximation with correct boundary conditions (CBDW-4B) is applied to the K-shell positronium formation from multi-electron atoms at intermediate and high impact energies. In the present approach, both K-shell electrons are treated as active electrons. For collisions of positrons with helium, carbon, and neon atoms, both the post and prior forms of the transition amplitude are calculated and the corresponding differential and integral cross sections are compared with the results of the three-body version of the formalism (CBDW-3B). In order to investigate the effects of the static electronic correlations on the process, initial bound states of the active electrons in helium atoms are described by Hylleraas and Silverman wave functions. Also for positronium formation from helium atoms the obtained cross sections are compared with the available experimental data and also with the results of the other theories.
Wydawca
Czasopismo
Rocznik
Tom
12
Numer
3
Strony
192-202
Opis fizyczny
Daty
wydano
2014-03-01
online
2014-03-13
Twórcy
  • Department of Physics and Isfahan Quantum Optics Group(IQOG), Faculty of Science, University of Isfahan, Isfahan, 81746-73441, Iran , ghanbari@phys.ui.ac.ir
  • Department of Physics and Isfahan Quantum Optics Group(IQOG), Faculty of Science, University of Isfahan, Isfahan, 81746-73441, Iran
Bibliografia
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Typ dokumentu
Bibliografia
Identyfikatory
Identyfikator YADDA
bwmeta1.element.-psjd-doi-10_2478_s11534-014-0436-0
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