Published March 2010 | Version v1
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Investigation on present status of thermal neutron scattering law for beryllium metal and hydrogen in light water

Creators

  • 1. Japan Atomic Energy Agency, Oarai Research and Development Center, Oarai, Ibaraki (Japan)

Description

For the neutronic calculation in JMTR, an error of only thermal-neutron-flux tends to extend in specific region, i.e. an irradiation region in beryllium reflectors surrounding the fuel region. From our former investigation, the reason is thought to be the neutron scattering and absorption in the thermal energy region. Therefore, the effect on the thermal neutron scattering law S(α, β) to hydrogen in light water and to beryllium metal was investigated. As a result, it was confirmed that the error could be caused by the treatment in inelastic scattering within coherent scattering in the beryllium metal, whereas no error factor was found to the hydrogen in light water. (author)

Availability note (English)

Available from JAEA; DOI: https://doi.org/10.11484/jaea-review-2009-074

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Additional details

Identifiers

DOI
10.11484/jaea-review-2009-074;

Publishing Information

Imprint Pagination
28 p.
Report number
JAEA-Review--2009-074

INIS

Country of Publication
Japan
Country of Input or Organization
Japan
INIS RN
42011366
Subject category
S21: SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS;
Descriptors DEI
BERYLLIUM; COHERENT SCATTERING; CROSS SECTIONS; ERRORS; HYDROGEN; INELASTIC SCATTERING; IRRADIATION; JAEA; JMTR REACTOR; NEUTRON FLUX; NEUTRON REFLECTORS; THERMAL NEUTRONS; WATER
Descriptors DEC
ALKALINE EARTH METALS; BARYONS; ELEMENTARY PARTICLES; ELEMENTS; ENRICHED URANIUM REACTORS; FERMIONS; HADRONS; HYDROGEN COMPOUNDS; IRRADIATION REACTORS; JAPANESE ORGANIZATIONS; MATERIALS TESTING REACTORS; METALS; NATIONAL ORGANIZATIONS; NEUTRONS; NONMETALS; NUCLEONS; OXYGEN COMPOUNDS; RADIATION FLUX; REACTORS; RESEARCH AND TEST REACTORS; RESEARCH REACTORS; SCATTERING; TANK TYPE REACTORS; TEST FACILITIES; TEST REACTORS; WATER COOLED REACTORS; WATER MODERATED REACTORS

Optional Information

Notes
17 refs., 2 tabs.