Published September 2016 | Version v1
Journal article Metadata-only

Development of the graphite-moderated neutron calibration fields using 241Am-Be sources in JAEA-FRS

Creators

  • 1. Japan Atomic Energy Agency (JAEA), Ibaraki (Japan)
  • 2. Institute of Radiation Measurements, Ibaraki (Japan)

Description

The moderated neutron calibration fields using 241Am-Be sources and a graphite moderator have been constructed at the Facility of Radiation Standard (FRS) in the Japan Atomic Energy Agency (JAEA). The neutron spectra of the fields were evaluated by the Monte-Carlo calculations and measurements using the Bonner Multi-sphere Spectrometer. The fields have continuous neutron spectra from several MeV to thermal neutron energy, with fluence-averaged energies of 0.84 MeV and 0.60 MeV. Reference values of fluence rates and ambient/personal dose equivalent rates were determined from neutron spectra by measurements. Currently, the fields are available for calibration or performance test of neutron measuring instruments

Additional details

Publishing Information

Journal Title
Journal of Radiation Protection and Research (2016)
Journal Volume
41
Journal Issue
2
Series
9 refs, 5 figs, 1 tab
Journal Page Range
p. 211-215
ISSN
2508-1888

INIS

Country of Publication
Korea, Republic of
Country of Input or Organization
Korea, Republic of
INIS RN
47121276
Subject category
S46: INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY; S61: RADIATION PROTECTION AND DOSIMETRY;
Descriptors DEI
AMERICIUM 241; CALIBRATION; DOSE RATES; JAEA; MONTE CARLO METHOD; NEUTRON SPECTRA; PERFORMANCE; RADIATION DOSES; THERMAL NEUTRONS
Descriptors DEC
ACTINIDE NUCLEI; ALPHA DECAY RADIOISOTOPES; AMERICIUM ISOTOPES; BARYONS; CALCULATION METHODS; DOSES; ELEMENTARY PARTICLES; FERMIONS; HADRONS; HEAVY NUCLEI; ISOTOPES; JAPANESE ORGANIZATIONS; NATIONAL ORGANIZATIONS; NEUTRONS; NUCLEI; NUCLEONS; ODD-EVEN NUCLEI; RADIOISOTOPES; SPECTRA; SPONTANEOUS FISSION RADIOISOTOPES; YEARS LIVING RADIOISOTOPES