The highly efficient gamma-neutron detector for control of fissionable radioactive materials
Comparative measurements and analysis of detection efficiency of fast and thermal neutrons from ²³⁹Pu-Be source by heavy oxide scintillators (Z≥50) confirmed high detection efficiency (∼ 40-50 %). The most probable mechanism determining the fast neutron detection efficiency is the reaction of inelas...
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| Published in: | Functional Materials |
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| Date: | 2014 |
| Main Authors: | , , , , , |
| Format: | Article |
| Language: | English |
| Published: |
НТК «Інститут монокристалів» НАН України
2014
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| Subjects: | |
| Online Access: | https://nasplib.isofts.kiev.ua/handle/123456789/120471 |
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| Journal Title: | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| Cite this: | The highly efficient gamma-neutron detector for control of fissionable radioactive materials / V.D. Ryzhikov, B.V. Grinyov, G.M. Onyshchenko, L.A. Piven', S.V. Naydenov, O.K. Lysetska // Functional Materials. — 2014. — Т. 21, № 3. — С. 345-351. — Бібліогр.: 16 назв. — англ. |
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Digital Library of Periodicals of National Academy of Sciences of Ukraine| Summary: | Comparative measurements and analysis of detection efficiency of fast and thermal neutrons from ²³⁹Pu-Be source by heavy oxide scintillators (Z≥50) confirmed high detection efficiency (∼ 40-50 %). The most probable mechanism determining the fast neutron detection efficiency is the reaction of inelastic scattering (n, n ′ γ ) as the main mechanism of interaction of neutrons with nuclei of oxide scintillators. The fast neutron detection efficiency was determined by the method of internal counting of gamma-quanta emerging in the scintillator under (n, n ′ γ ) reaction. It has been shown that the use of heavy oxide scintillators (which are also efficient gamma-detectors) in inspection systems can allow detection of fissionable radioactive materials.
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| ISSN: | 1027-5495 |