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- Title
STUDY OF A GOLD-FOIL-BASED MULTISPHERE NEUTRON SPECTROMETER.
- Authors
Wang, Z.; Hutchinson, J. D.; Hertel, N. E.; Burgett, E.; Howell, R. M.
- 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.
- Subjects
SPECTROMETERS; SPECTRUM analysis instruments; GOLD foil; THERMAL neutrons; PARTICLES (Nuclear physics); ALUMINUM; NUCLEAR reactors
- Publication
Radiation Protection Dosimetry, 2008, Vol 128, Issue 3, p289
- ISSN
0144-8420
- Publication type
Article
- DOI
10.1093/rpd/ncm375