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Journal of Radioanalytical and Nuclear Chemistry

, Volume 271, Issue 1, pp 233–240 | Cite as

Neutron activation analysis of large volume samples: The influence of inhomogeneity

  • F. Tzika
  • I. E. Stamatelatos
  • J. Kalef-Ezra
Article

Abstract

A large sample neutron activation analysis (LSNAA) facility is under development at GRR-1 research reactor, NCSR ‘Demokritos’, to perform multi-element, non-destructive, contamination-free analysis of large volume samples. Correction algorithms have been derived to account for thermal neutron and gamma-ray self-attenuation in macroscopically homogeneous samples, as well as the photon detection efficiency to voluminous samples, based on no prior knowledge of the sample matrix composition. In the present study Monte Carlo simulations were performed to estimate the influence of inhomogeneities of major (matrix) and trace element on the accuracy of the technique. Types of inhomogeneities that can lead to severe errors in the analysis were depicted. The potential of including inhomogeneity tests in the measuring procedure to ensure the method’s applicability was examined.

Keywords

Neutron Activation Analysis Thermal Neutron Large Volume Sample Circular Surface Major Material 
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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Copyright information

© Akadémiai Kiadó 2007

Authors and Affiliations

  • F. Tzika
    • 1
    • 2
  • I. E. Stamatelatos
    • 1
  • J. Kalef-Ezra
    • 2
  1. 1.Institute of Nuclear Technology and Radiation ProtectionNCSR ‘Demokritos’AttikisGreece
  2. 2.Medical Physics Laboratory, Medical SchoolUniversity of IoanninaIoanninaGreece

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