Skip to main content
SpringerLink
Log in

On the effect of backscattering of γ quanta and statistics in positron-annihilation lifetime measurements

  • Contributed Papers
  • Published:
Applied Physics A Aims and scope Submit manuscript

Abstract

The contribution of backscattered, 1.27-MeVγ quanta to the coincidence counts in positron-annihilation lifetime measurements has been investigated. Depending on the energy window settings and geometry, as much as 20% of the coincidence counts was found to arise from backscattered events. Computer analysis of such spectra leads to erroneous results. Analysis of computer-generated lifetime spectra shows that good statistics is more important than good resolution power for the quality of the analysis.

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. L.Dorikens-Vanpreat, D.Segers, M.Dorikens: Appl. Phys.23, 149–152 (1980)

    Google Scholar 

  2. P.Kirkegård, M.Eldrup: Phys. Commun.7, 401–409 (1974)

    Google Scholar 

Download references

Author information

Authors and Affiliations

  1. Institute of Physics, University of Aarhus, DK-8000, Aarhus, C, Denmark

    S. Dannefaer

Authors
  1. S. Dannefaer
    View author publications

    You can also search for this author in PubMed Google Scholar

Additional information

On leave of absence at Danfoss, DK-6430 Nordborg, Denmark

Rights and permissions

Reprints and permissions

About this article

Cite this article

Dannefaer, S. On the effect of backscattering of γ quanta and statistics in positron-annihilation lifetime measurements. Appl. Phys. A 26, 255–259 (1981). https://doi.org/10.1007/BF00617847

Download citation

  • Received:

  • Accepted:

  • Issue Date:

  • DOI: https://doi.org/10.1007/BF00617847

PACS

Search

Navigation