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Journal of Radioanalytical Chemistry

, Volume 20, Issue 1, pp 113–134 | Cite as

Corrections of counting losses in gamma-spectrometry of short-lived radionuclides

  • E. Junod
Physical Methods Section

Abstract

A short-lived radionuclide is characterized essentially by the decrease of its activity even while it is counted. The relations used between the number of counts recorded in a given time and the half-life in order to obtain the true counting rate are reviewed. Moreover, in gamma-spectrometry with multichannel analysers having variable dead-time, counting losses are observed. Exact corrections are calculated for pure short-lived radionuclides and for mixtures of one short-lived and one or more long-lived radionuclides. Based on these calculations, the approximations given by the built-in “live-timer” device of the analysers and by a new “actual-time” concept (with external live-time measurement) are evaluated. Curves are drawn as functions of the ratio counting time vs. half-life, to ensure minimal errors of less then 1%.

Keywords

Counting Time Multichannel Analyser Effective Time Counting Loss Exact Correction 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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References

  1. 1.
    E. Junod, CEA-R-2980, 1966.Google Scholar

Copyright information

© Akadémiai Kiadó 1974

Authors and Affiliations

  • E. Junod
    • 1
  1. 1.Département des Radioéléments, Groupe d’Analyse par ActivationCentre d’Etudes Nucléaires de GrenobleFrance

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