Experiment and analysis of neutron spectra in a concrete assembly bombarded by 14-MeV neutrons
Creators
- 1. Japan Atomic Energy Research Institute, Dept. of Nuclear Engineering, Tokai-mura, Naka-gun, Ibaraki-ken (Japan)
Description
The neutron spectra in a concrete assembly bombarded by 14-MeV neutrons are measured by aa miniature NE-213 spectrometer and the multifoil activation method. The results obtained are within experimental error. The measured spectra are compared with calculated results obtained using the two-dimensional DOT3.5 transport code with 125-group structure cross-section libraries based on ENDF/B-IV,JENDL-2, and JENDL-3T (the test version of JENDL-3). In the deuterium-tritium neutron peak region, the measured and calculated neutron spectra are in agreement. However,all the calculations overestimate the measurements by 10 to 50% in the mega-eletron-volt region. In a still lower neutron energy range, where the 197Au(n,γ)198 Au reaction is dominant, discrepancies from - 30 to + 40% are observed. Possible reasons are considered, but none explain the discrepancies
Additional details
Publishing Information
- Journal Title
- Nuclear Science and Engineering
- Journal Volume
- 103
- Journal Issue
- 1
- Series
- Nucl. Sci. Eng.
- Journal Page Range
- 46-58
- ISSN
- 0029-5639
- CODEN
- NSENA
INIS
- Country of Publication
- United States
- Country of Input or Organization
- United States
- INIS RN
- 21053872
- Subject category
- S22: GENERAL STUDIES OF NUCLEAR REACTORS; S73: NUCLEAR PHYSICS AND RADIATION PHYSICS;
- Resource subtype / Literary indicator
- Numerical Data
- Descriptors DEI
- ALGORITHMS; CONCRETES; CROSS SECTIONS; D CODES; DEUTERIUM; ELECTRONS; EXPERIMENTAL DATA; GOLD 197 TARGET; GOLD 198; INELASTIC SCATTERING; NEUTRON SPECTRA; REACTOR COMPONENTS; REACTOR SAFETY EXPERIMENTS; TRITIUM; TWO-DIMENSIONAL CALCULATIONS
- Descriptors DEC
- BETA DECAY RADIOISOTOPES; BETA-MINUS DECAY RADIOISOTOPES; BUILDING MATERIALS; COMPUTER CODES; DATA; DAYS LIVING RADIOISOTOPES; ELEMENTARY PARTICLES; FERMIONS; GOLD ISOTOPES; HEAVY NUCLEI; HYDROGEN ISOTOPES; INFORMATION; ISOMERIC TRANSITION ISOTOPES; ISOTOPES; LEPTONS; LIGHT NUCLEI; MATERIALS; NUCLEI; NUMERICAL DATA; ODD-EVEN NUCLEI; ODD-ODD NUCLEI; RADIOISOTOPES; SCATTERING; SPECTRA; STABLE ISOTOPES; TARGETS; YEARS LIVING RADIOISOTOPES