Published October 2013 | Version v1
Report Restricted

Estimation of reaction rate in subcritical system by gamma ray spectrum measurement

Creators

  • 1. Central Research Institute of Electric Power Industry, Komae, Tokyo (Japan)
  • 2. Kyoto University, Research Reactor Institute, Kumatori, Osaka (Japan)
  • 3. Tokai University, Hiratsuka, Kanagawa (Japan)

Description

A quantification method of reaction rates in multiplication systems by γ ray spectrum measurements is studied. Light water moderated subcritical cores are mocked up with uranium (U) - aluminum (Al) alloy fuels in KUCA and high energy (>3MeV) γ rays are measured with a BGO scintillator. The response functions and the detection efficiencies are calculated for γ rays from 235U(n,fis), Al(n,γ), and SUS(n,γ) reactions. With calculated ones and the measured pulse height spectra, the reaction rates are unfolded. For the Al(n,γ) reaction, the deduced reaction rates agree with those deduced by neutronics calculations. (author)

Files

Restricted

The record is publicly accessible, but files are restricted to users with access.

Part of:
Proceedings of the 2012 symposium on nuclear data

Additional details

Publishing Information

Imprint Title
Proceedings of the 2012 symposium on nuclear data
Imprint Pagination
214 p.
Journal Page Range
p. 179-184
Report number
JAEA-Conf--2013-002

Conference

Title
2012 symposium on nuclear data
Dates
15-16 Nov 2012
Place
Kumatori, Osaka (Japan)

INIS

Country of Publication
Japan
Country of Input or Organization
Japan
INIS RN
45087680
Subject category
S73: NUCLEAR PHYSICS AND RADIATION PHYSICS;
Resource subtype / Literary indicator
Conference
Descriptors DEI
ALUMINIUM; BURNUP; CAPTURE; CRITICALITY; GAMMA SPECTROSCOPY; HIGHLY ENRICHED URANIUM; MULTIPLICATION FACTORS; NEUTRON REACTIONS; NUCLEAR DATA COLLECTIONS; NUCLEAR REACTION KINETICS; SAFETY MARGINS; SUBCRITICAL ASSEMBLIES; WATER MODERATED REACTORS
Descriptors DEC
ACTINIDES; BARYON REACTIONS; DIMENSIONLESS NUMBERS; ELEMENTS; ENRICHED URANIUM; EXPERIMENTAL REACTORS; HADRON REACTIONS; ISOTOPE ENRICHED MATERIALS; KINETICS; MATERIALS; METALS; NUCLEAR REACTIONS; NUCLEON REACTIONS; REACTION KINETICS; REACTORS; RESEARCH AND TEST REACTORS; SPECTROSCOPY; URANIUM

Optional Information

Notes
11 refs., 6 figs., 1 tab.
Secondary number(s)
INDC(JPN)--198