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Production of collimated positronium by positron scattering from CO2, N2 and Xe

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Abstract

The efficiency for collimated positronium production by charge-exchange in positron collisions with gaseous targets has been investigated in the range 20–396 eV. At 250 and 396 eV, CO2 has been found to be approximately twice as efficient as N2, the previous best neutralising gas at high energies. The efficiency from Xe, whilst lower at low energies, becomes comparable to that from H2 at around 100–120 eV; at ∼250 eV, it is an order of magnitude lower.

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Author notes

  1. D. E. Leslie

    Present address: Brunel University, UB8 3PH, Uxbridge, Middlesex, UK

Authors and Affiliations

  1. UCL Department of Physics and Astronomy, University College London, WC1E 6BT, London, UK

    M. Shipman, S. Brawley, D. E. Leslie, S. Armitage & G. Laricchia

Authors
  1. M. Shipman
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  2. S. Brawley
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  3. D. E. Leslie
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  4. S. Armitage
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  5. G. Laricchia
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Corresponding author

Correspondence to G. Laricchia.

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Shipman, M., Brawley, S., Leslie, D.E. et al. Production of collimated positronium by positron scattering from CO2, N2 and Xe. Eur. Phys. J. D 66, 96 (2012). https://doi.org/10.1140/epjd/e2012-20753-9

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  • DOI: https://doi.org/10.1140/epjd/e2012-20753-9

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