Optimization of a multiline neutron source based on a232Th Filter

Y. Ben-Galim, R. Moreh, I. Orion

Research output: Contribution to journalArticlepeer-review


A multiline neutron source can be produced by using a metallic 232Th filter in conjunction with a white neutron source. The multiline spectrum consists of 20 relatively strong intensity lines ranging from 10 to 4000 eV. It is shown that the width of each neutron line of the spectrum is strongly dependent on the absorber thickness. This neutron source is useful for accurate cross section measurements with precise neutron energies. The optimum thickness of the232Th absorber, which was found to yield a sharp multiline spectrum throughout the above energy range, was found to be 14 cm.

Original languageEnglish
Article number030912-1
JournalJournal of Nuclear Engineering and Radiation Science
Issue number3
StatePublished - 1 Jul 2017


  • Cross sections
  • Monochromatic neutrons
  • Neutrons
  • Thorium filtered beams


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