Neutron fluence spectrometry using disk activation

Research output: Contribution to journalArticle

Authors

  • Göran Lövestam
  • Mikael Hult
  • Andreas Fessler
  • Joël Gasparro
  • Pierre Kockerols
  • Klaas Okkinga
  • Hamid Tagziria
  • Filip Vanhavere
  • J.S. Elisabeth Wieslander

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Abstract

A simple and robust detector for spectrometry of environmental neutrons has been developed. The technique is based on neutron activation of a series of different metal disks followed by low-level gamma-ray spectrometry of the activated disks and subsequent neutron spectrum unfolding. The technique is similar to foil activation but here the applied neutron fluence rates are much lower than usually in the case of foil activation. The detector has been tested in quasi mono-energetic neutron fields with fluence rates in the order of 1000–10000 cm2 s1, where the obtained spectra showed good agreement with spectra measured using a Bonner sphere spectrometer. The detector has also been tested using an AmBe source and at a neutron fluence rate of about 40 cm2 s1, again, a good agreement with the assumed spectrum was achieved

Details

Original languageEnglish
Pages (from-to)72-79
JournalRadiation Measurements
Volume44
Issue number1
DOIs
Publication statusPublished - 22 Jan 2009

Keywords

  • Neutron fluence, spectrometry using disk activation

ID: 358405