Interaction of Positronium Atoms with Coherent Radiation

  • F. H. M. Faisal
  • P. S. Ray
Conference paper


Ps is a purely leptonic atom and plays an important role in testing the predictions of QED1. Recently it has also been suggested2,3 that Ps could decay by emitting axions whose existence has been conjectured4–8 for removing CP violations of gauge theories. In this connection the decay of the 3S1 ground state as well as the 3P1 state are of interest2,3. Ps atom is interesting for still other reasons such as the possibility of influencing the Mev γ-photons generated by self-annihilation of Ps — by resonant coupling with laser photons. Recent development of the accuracy of measurements9–11 of the fundamental hyperfine separation of the ground state Ps, also necessitates re-evaluation of the classic microwave absorption spectrum for this system. In this paper we consider the following problems in the above context:
  1. (i)

    Transient excitation of the ground state Ps to the first excited P-states and the exotic decay probability.

  2. (ii)

    Modification of the γ=annihilation probability of Ps by resonant laser interaction.

  3. (iii)

    Accurate redetermination of the microwave absorption line shape function for analysis of hyperfine separation in Ps.



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Copyright information

© Springer Science+Business Media New York 1984

Authors and Affiliations

  • F. H. M. Faisal
    • 1
  • P. S. Ray
    • 1
  1. 1.Universität BielefeldBielefeldFederal Republic of Germany

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