Skip to main content
SpringerLink
Log in

Evidence for a ramsauer minimum in positron-argon collisions

  • Contributed Papers
  • Published:
Applied physics Aims and scope Submit manuscript

Abstract

The lifetime spectra are obtained for positrons annihilating in argon gas at room temperature and at lower temperatures of the order of 100 K. By suitably normalising and subtracting room temperature from low temperature lifetime spectra, certain features of the spectra which are determined by the momentum transfer cross-section for positron-argon collision are greatly enhanced. As a result, it is found that the cross-section must possess a well defined minimum below 3 eV in order to account for the observed effects.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Log in via an institution

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Institutional subscriptions

Similar content being viewed by others

References

  1. D.G. Thompson: Proc. Roy. Soc. London A294, 160 (1966)

    ADS  Google Scholar 

  2. H.S.W. Massey, J. Lawson, D.G. Thompson:Quantum Theory of Atoms, Molecules, Solid State (Academic Press, New York 1966) p. 203

    Google Scholar 

  3. K.F. Canter: Contemp. Phys.13, 457 (1972)

    ADS  Google Scholar 

  4. S.J. Tao, J. Bell, J.H. Green: Proc. Phys. Soc.83, 453 (1964)

    Article  Google Scholar 

  5. D.A.L. Paul: Proc. Phys. Soc.84, 563 (1964)

    Article  Google Scholar 

  6. W.R. Falk, G. Jones: Canad. J. Phys.42, 1751 (1964)

    Google Scholar 

  7. P.H.R. Orth, G. Jones: Phys. Rev.183, 7 (1969)

    Article  ADS  Google Scholar 

  8. D.B. Miller, P.H.R. Orth, G. Jones: Phys. Letters27A, 649 (1968)

    ADS  Google Scholar 

  9. H.S.W. Massey, E.H.S. Burhop:Electronic and Ionic Impact Phenomena, Vol 1 (Oxford Press, Oxford 1969) p. 47

    Google Scholar 

  10. K.F. Canter, L.O. Roellig: Phys. Rev. Letters25, 328 (1970)

    Article  ADS  Google Scholar 

  11. K.F. Canter: Ph. D. Dissertation, Wayne State University (1970)

  12. S.J. Tao: Phys. Rev. A1, 1257 (1970)

    Article  ADS  Google Scholar 

  13. D.A.L. Paul, C.Y. Leung: Canad. J. Phys.46, 2779 (1968)

    ADS  Google Scholar 

  14. P.G. Coleman, T.C. Griffith, G.R. Heyland, T.L. Killeen: Appl. Phys.3, 271 (1974)

    Article  ADS  Google Scholar 

  15. G.F. Lee, G. Jones: Canad. J. Phys.52, 17 (1974)

    ADS  Google Scholar 

  16. S.J. Tao, J.H. Green, G.J. Celitans: Proc. Phys. Soc.81, 1091 (1963)

    Article  Google Scholar 

  17. K.F. Canter, P.G. Coleman, T.C. Griffith, G.R. Heyland: Appl. Phys.3, 249 (1974)

    Article  ADS  Google Scholar 

  18. W.R. Falk, P.H.R. Orth, G. Jones: Phys. Rev. Letters14, 447 (1965b)

    Article  ADS  Google Scholar 

  19. S. Hara, P. A. Fraser: J. Phys. B. (in press)

Download references

Author information

Author notes

  1. K. F. Canter

    Present address: Department of Physics, Brandeis University, Waltham, Massachusetts, USA

Authors and Affiliations

  1. Department of Physics and Astronomy, University College London, Gower Street, WC1E 6 BT, London

    K. F. Canter & G. R. Heyland

Authors
  1. K. F. Canter
    View author publications

    You can also search for this author in PubMed Google Scholar

  2. G. R. Heyland
    View author publications

    You can also search for this author in PubMed Google Scholar

Rights and permissions

Reprints and permissions

About this article

Cite this article

Canter, K.F., Heyland, G.R. Evidence for a ramsauer minimum in positron-argon collisions. Appl. Phys. 5, 231–238 (1974). https://doi.org/10.1007/BF00928134

Download citation

  • Received:

  • Accepted:

  • Issue Date:

  • DOI: https://doi.org/10.1007/BF00928134

Index Headings

Search

Navigation