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    • Two-electron excitation in helium-like ions by electron impact

      B Padhy D K Rai

      Research Articles Volume 35 Issue 3 September 1990 pp 341-348

    • Fulltext

       

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      Permanent link:
      https://www.ias.ac.in/article/fulltext/pram/035/03/0341-0348

    • Keywords

       

      Two-electron excitation cross-section; electron impact; Coulomb-Born-Oppenheimer approximation

    • Abstract

       

      Calculation of cross-sections for the two-electron excitation in helium-like ions by electron impact employing Coulomb-Born-Oppenheimer (CBO) approximation is presented. Analytical expressions for the differential and total scattering cross-sections without using partial wave expansion of the wavefunction reported earlier have been used. The total and differential scattering cross-sections for each of the excitations 1s21S* → 2s21Se, 2s2p1.3P0, 2p21Se,3Pe,1De in Be2+ and B3+ are computed. Results for Li+ reported earlier are also included for comparison.

    • Author Affiliations

       

      B Padhy1 D K Rai1 2

      1. Department of Physics, B.J.B. College, Bhubaneswar - 751 014, India
      2. Department of Physics, Banaras Hindu University, Varanasi - 221 005, India

    • Dates

       
      Published
      September 1990
      Manuscript received
      31 January 1989
      Manuscript revised
      8 May 1990

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