Study of a gold-foil-based multisphere neutron spectrometer

Z. Wang, J. D. Hutchinson, N. E. Hertel, E. Burgett, R. M. Howell

Research output: Contribution to journalArticlepeer-review

12 Scopus citations

Abstract

Multisphere neutron spectrometers with active thermal neutron detectors cannot be used in high-intensity radiation fields due to pulse pile-up and dead-time effects. Thus, a multisphere spectrometer using a passive detection system, specifically gold foils, has been investigated in this work. The responses of a gold-foil-based Bonner sphere neutron spectrometer were studied for two different gold-foil holder designs; an aluminium-polyethylene holder and a polyethylene holder. The responses of the two designs were calculated for four incident neutron beam directions, namely, parallel, perpendicular and at ± 45° relative to the flat surface of the foil. It was found that the use of polyethylene holder resulted in a more isotropic response to neutrons for the four incident directions considered. The computed responses were verified by measuring the neutron spectrum of a 252Cf source with known strength.

Original languageEnglish (US)
Pages (from-to)289-293
Number of pages5
JournalRadiation protection dosimetry
Volume128
Issue number3
DOIs
StatePublished - Feb 2008

All Science Journal Classification (ASJC) codes

  • Radiological and Ultrasound Technology
  • Radiation
  • Radiology Nuclear Medicine and imaging
  • Public Health, Environmental and Occupational Health

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