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jStudy of a Monte Carlo rearrangement model for the activity determination of electron-capture nuclides by means of liquid scintillation counting

Authors
Publisher
Elsevier Ltd
Publication Date
Volume
66
Identifiers
DOI: 10.1016/j.apradiso.2008.02.048
Keywords
  • Liquid Scintillation Counting
  • Ciemat/Nist Method
  • Monte Carlo Atomic Rearrangement Model
  • 109Cd
  • 125I
Disciplines
  • Mathematics

Abstract

Abstract A new Monte Carlo approach for the computation of the electron spectra of electron-capture nuclides is applied to obtain efficiencies in liquid scintillation counting for CIEMAT/NIST applications. The new method is applied to the radionuclides 109Cd and 125I by using a stochastic atomic rearrangement model, taking into account rearrangement processes including L -, M-, and N-subshells. The counting efficiencies were computed with the new code MICELLE which also comprises an approach for calculating the counting efficiency of a radionuclide in a gel phase sample. The calculated counting efficiencies are compared with experimental results.

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