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A vertical positron beam for low-temperature surface studies

  • Low-Energy Positron Beams
  • Solids and Materials
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Abstract

A cryostat system incorporating a low-energy positron beam for surface measurements down to Temperatures below 2 K is currently under construction at the Royal Holloway and Bedford New College. The positron beam has recently been brought into operation and its operating characteristics have been evaluated. Positrons from a22Na source are converted with an efficiency of ε=2×10−4 and transported magnetically at 1.5 V above the work function to a target at the bottom of a cryostat. The transmission of a 7 mm diameter beam is found to be constant over a range of axial field strengths from 40 to 50 G.

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References

  1. See, for example, A.P. Mills Jr., K.G. Lynn: InPositron Solid State Physics, ed. by W. Brandt, A. Dupasquier (North-Holland, Amsterdam 1983)

    Google Scholar 

  2. A. Dupasquier, A. Zecca: Rev. Nuovo Cimento8, No. 12, 1 (1985)

    Google Scholar 

  3. Y.C. Jean, C. Yu, D.M. Zhou: Phys. Rev. B32, 4313 (1985)

    Google Scholar 

  4. P. Rice-Evans, M. Moussavi-Madani, K.U. Rao, D.T. Britton, B.P. Cowan: Phys. Rev. B34, 6117 (1986)

    Google Scholar 

  5. D.T. Britton, P.C. Rice-Evans, J.H. Evans: Nucl. Inst. Meth. B12, 426 (1985)

    Google Scholar 

  6. D.T. Britton, P.C. Rice-Evans, J.H. Evans: Proc.Slow Positron Workshop 1986 (Univ. East Anglia 1986)

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Authors and Affiliations

  1. Department of Physics, Royal Holloway and Bedford New College, University of London, TW20 OEX, Egham, UK

    P. C. Rice-Evans, D. T. Britton & B. P. Cowan

Authors
  1. P. C. Rice-Evans
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  2. D. T. Britton
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  3. B. P. Cowan
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Rice-Evans, P.C., Britton, D.T. & Cowan, B.P. A vertical positron beam for low-temperature surface studies. Appl. Phys. A 43, 283–285 (1987). https://doi.org/10.1007/BF00635184

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  • DOI: https://doi.org/10.1007/BF00635184

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