Positronium Formation in Positron-Hydrogen Scattering at Intermediate Energies

  • D. Basu
  • Madhumita Basu
  • A. S. Ghosh
Part of the NATO ASI Series book series (NSSB, volume 169)


Recently, experiments1–3 have been performed to measure the positronium (Ps) formation cross section in positron-atom and positron-molecule scattering. The results of the University College London groupl differ drastically from those of the Texas group2. Moreover, the most recent findings of the Texas group3 show that their results in the case of e+- He scattering differ from first Born (FBA) predictions appreciably even at an incident positron energy of 250 eV. These observations have stimulated considerable theoretical activities4–6 along this line.


Charge Transfer Process Intermediate Energy Order Contribution Formation Cross Section Positronium Formation 
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    L.S. Fornari, L.M. Diana and P.G. Coleman, Phys. Rev. Lett. 51: 2276 (1983).ADSCrossRefGoogle Scholar
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    L.M. Diana, P.G. Coleman, D.L. Brooks, P.K. Pendleto and D.M. Norman, (Private communication).Google Scholar
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    J.W. Humberston in Positron (Electron)-Gas Scattering edited by W.E. Kauppila, T.S. Stein and J.M. Wadehra ( World Scientific, Singapore ) (1986) p. 35.Google Scholar
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    P. Khan and A.S. Ghosh, Phys. Rev. A 27: 1904 (1983).ADSGoogle Scholar
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    P. Khan and A.S. Ghosh, Phys. Rev. A 28: 2180 (1983).ADSGoogle Scholar

Copyright information

© Plenum Press, New York 1987

Authors and Affiliations

  • D. Basu
    • 1
  • Madhumita Basu
    • 1
  • A. S. Ghosh
    • 1
  1. 1.Theoretical Physics DepartmentIndian Association for the Cultivation of ScienceCalcutta-32India

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