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Journal of Radioanalytical and Nuclear Chemistry

, Volume 287, Issue 2, pp 551–555 | Cite as

A system for low-level the cosmogenic 22Na radionuclide measurement by gamma–gamma coincidence method using BGO detectors

  • Weihua Zhang
  • Jing Yi
  • Pawel Mekarski
  • Ian Hoffman
  • Kurt Ungar
  • Ari-Pekka Leppänen
Article

Abstract

In this study, a gamma–gamma coincidence spectrometry was developed and examined for environmental low-level cosmogenic 22Na monitoring purposes. The spectrometry consists of two bismuth germanate scintillators (BGO) and XIA LLC Digital Gamma Finder (DGF)/Pixie-4 software and card package. The developed spectrometry was optimized according to the considerations of output count rate and gamma peak energy resolution. This spectrometry provides a more sensitive and effective way to quantify even trace amounts of 22Na with critical detection limit of 9 mBq. A sophisticated computer simulation was also created with the goal of obtaining a better understanding of the experimental results and gamma–gamma coincidence efficiencies at different sample geometries.

Keywords

Gamma–gamma coincidence 22Na BGO Aerosol sample 

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Copyright information

© Akadémiai Kiadó, Budapest, Hungary 2010

Authors and Affiliations

  • Weihua Zhang
    • 1
  • Jing Yi
    • 1
  • Pawel Mekarski
    • 1
  • Ian Hoffman
    • 1
  • Kurt Ungar
    • 1
  • Ari-Pekka Leppänen
    • 2
  1. 1.Radiation Protection Bureau of Health CanadaOttawaCanada
  2. 2.Radiation and Nuclear Safety Authority, Regional Laboratory in Northern FinlandRovaniemiFinland

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