Published February 2013 | Version v1
Journal article Metadata-only

Cross-section measurement of 237Np (n, γ) from 10 meV to 1 keV at Japan Proton Accelerator Research Complex

Creators

  • 1. Japan Atomic Energy Agency, Tokai, Ibaraki (Japan)
  • 2. Tokyo Inst. of Technology, Research Laboratory for Nuclear Reactors, Tokyo (Japan)
  • 3. Hokkaido Univ., Graduate School of Engineering, Sapporo, Hokkaido (Japan)
  • 4. Kyoto Univ., Research Reactor Inst., Kumatori, Osaka (Japan)

Description

The cross-section of the 237Np (n, γ) reaction has been measured in the energy range from 10 meV to 1 keV using the ANNRI-NaI(Tl) spectrometer at the Japan Proton Accelerator Research Complex (J-PARC). The cross-section was obtained relative to that of the 10B (n, α1) reaction. The absolute value of the cross-section was deduced by normalizing the relative cross-section to the evaluated value of JENDL-4.0 at the first resonance. The thermal cross-section was obtained to be (176.7 ± 0.5sta ± 4.7sys) b. The Maxwellian-averaged cross-section for kT = 25.3 meV was derived as (174.6 ± 0.6sta ± 5.1sys) b by referring the cross-section below 10 meV from JENDL-4.0. These results lead to the Westcott's g-factor of 0.988 ± 0.004sta ± 0.009sys. (author)

Availability note (English)

Available from http://dx.doi.org/10.1080/00223131.2013.757470

Additional details

Identifiers

DOI
10.1080/00223131.2013.757470;

Publishing Information

Journal Title
Journal of Nuclear Science and Technology (Tokyo)
Journal Volume
50
Journal Issue
1-2
Journal Page Range
p. 188-200
ISSN
0022-3131

INIS

Country of Publication
Japan
Country of Input or Organization
Japan
INIS RN
44068631
Subject category
S73: NUCLEAR PHYSICS AND RADIATION PHYSICS; S46: INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY;
Descriptors DEI
CAPTURE; CROSS SECTIONS; GAMMA RADIATION; J-PARC; NAI DETECTORS; NEPTUNIUM 237; NEPTUNIUM 237 TARGET; NEUTRON REACTIONS; NEUTRON SOURCE FACILITIES; SPECTROMETERS; THERMAL NEUTRONS; TIME-OF-FLIGHT METHOD
Descriptors DEC
ACCELERATORS; ACTINIDE NUCLEI; ALPHA DECAY RADIOISOTOPES; BARYON REACTIONS; BARYONS; CYCLIC ACCELERATORS; ELECTROMAGNETIC RADIATION; ELEMENTARY PARTICLES; FERMIONS; HADRON REACTIONS; HADRONS; HEAVY NUCLEI; IONIZING RADIATIONS; ISOMERIC TRANSITION ISOTOPES; ISOTOPES; MEASURING INSTRUMENTS; NANOSECONDS LIVING RADIOISOTOPES; NEPTUNIUM ISOTOPES; NEUTRONS; NUCLEAR REACTIONS; NUCLEI; NUCLEON REACTIONS; NUCLEONS; ODD-EVEN NUCLEI; RADIATION DETECTORS; RADIATIONS; RADIOISOTOPES; SCINTILLATION COUNTERS; SOLID SCINTILLATION DETECTORS; SPONTANEOUS FISSION RADIOISOTOPES; SYNCHROTRONS; TARGETS; YEARS LIVING RADIOISOTOPES

Optional Information

Notes
26 refs., 13 figs., 2 tabs.