• Feynman diagram method for atomic collisions

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    • Keywords


      Electron exchange; ion exchange; vertex function; collisional ionisation; photo-effect charge transfer

    • Abstract


      Feynman diagram method of treating atomic collision problems in perturbation theory is presented and matrix elements are calculated for a number of processes. The result for the resonant charge transfer in hydrogen is identical to the well known OBK value. However, in processes like collisional ionisation, the results are different from those obtained by conventional methods.

    • Author Affiliations


      T Pradhan1 2 Avinash Khare1

      1. Institute of Physics, Bhubaneswar - 751007
      2. Saha Institute of Nuclear Physics, Calcutta - 700009
    • Dates

  • Pramana – Journal of Physics | News

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      Posted on July 25, 2019

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