Neutron self-shielding correction for prompt gamma neutron activation analysis of large samples

M. Blaauw, T. Belgya

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

Facilities and methods for INAA of large samples (up to 30 kg) have been developed and successfully tested at IRI, Delft. The methods encompass corrections for neutron self shielding in an isotropic neutron field and gamma self-absorption. The sample's neutron absorption and scattering characteristics are determined by monitoring the neutron fluence rate around the sample and comparing the neutron densities measured with unperturbed fluence rates. We report on the possibility of developing similar methods for PGNAA. Relative self-shielding factors were measured as well as obtained from Monte Carlo computations. The agreement is good except for the most extreme case, with respect to absorption, attempted (CCl4).

Original languageEnglish
Pages (from-to)257-259
Number of pages3
JournalJournal of Radioanalytical and Nuclear Chemistry
Volume265
Issue number2
DOIs
Publication statusPublished - Aug 1 2005

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ASJC Scopus subject areas

  • Analytical Chemistry
  • Nuclear Energy and Engineering
  • Radiology Nuclear Medicine and imaging
  • Pollution
  • Spectroscopy
  • Public Health, Environmental and Occupational Health
  • Health, Toxicology and Mutagenesis

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