Published November 2019 | Version v1
Report Restricted

Measurement of the neutron capture cross section of 237Np using ANNRI at MLF/J-PARC

Creators

  • 1. Tokyo Institute of Technology, Laboratory for Nuclear Reactors, Tokyo (Japan)
  • 2. Japan Atomic Energy Agency, Nuclear Science and Engineering Center, Tokai, Ibaraki (Japan)

Description

Neutron capture cross section measurements for 237Np have been conducted with the Accurate Neutron Nucleus Reaction Measurement Instrument (ANNRI) at the Materials and Life Science Facility (MLF) of the Japan Proton Accelerator Research Complex (J-PARC) using neutrons with energy ranging from thermal energy to 500 keV. A Time of Flight (TOF) method using a NaI(Tl) detector was employed for this measurement and the data were analyzed based on a pulse-height weighting technique in order to derive a neutron capture cross section. A thermal value for the cross section (σth) of 176.7 + 0.5sta was obtained. Along with the cross section measurement, the preliminary results of a resonance analysis using the REFIT program are presented. (author)

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Part of:
Proceedings of the 2018 symposium on nuclear data

Additional details

Identifiers

DOI
10.11484/jaea-conf-2019-001;

Publishing Information

Imprint Title
Proceedings of the 2018 symposium on nuclear data
Imprint Pagination
216 p.
Journal Page Range
p. 83-90
Report number
JAEA-Conf--2019-001

Conference

Title
2018 symposium on nuclear data
Dates
29-30 Nov 2018
Place
Tokyo (Japan)

INIS

Country of Publication
Japan
Country of Input or Organization
Japan
INIS RN
51045864
Subject category
S46: INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY; S43: PARTICLE ACCELERATORS; S12: MANAGEMENT OF RADIOACTIVE WASTES, AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES;
Resource subtype / Literary indicator
Conference
Descriptors DEI
ACCELERATOR-DRIVEN TRANSMUTATION; ACTINIDES; CAPTURE; CRITICALITY; CROSS SECTIONS; HIGH-LEVEL RADIOACTIVE WASTES; J-PARC CENTER; NAI DETECTORS; NEPTUNIUM 237; NEUTRON REACTIONS; NUCLEAR DATA COLLECTIONS; PROTON BEAMS; RADIOACTIVITY; RESONANCE; RESPONSE FUNCTIONS; SPALLATION NEUTRON SOURCE FACILITIES; TIME-OF-FLIGHT METHOD
Descriptors DEC
ACCELERATOR NEUTRON SOURCE FACILITIES; ACTINIDE NUCLEI; ALPHA DECAY RADIOISOTOPES; BARYON REACTIONS; BEAMS; ELEMENTS; FUNCTIONS; HADRON REACTIONS; HEAVY NUCLEI; ISOMERIC TRANSITION ISOTOPES; ISOTOPES; JAPANESE ORGANIZATIONS; MATERIALS; MEASURING INSTRUMENTS; METALS; NANOSECONDS LIVING RADIOISOTOPES; NATIONAL ORGANIZATIONS; NEPTUNIUM ISOTOPES; NEUTRON SOURCE FACILITIES; NUCLEAR REACTIONS; NUCLEI; NUCLEON BEAMS; NUCLEON REACTIONS; ODD-EVEN NUCLEI; PARTICLE BEAMS; RADIATION DETECTORS; RADIOACTIVE MATERIALS; RADIOACTIVE WASTES; RADIOISOTOPES; SCINTILLATION COUNTERS; SOLID SCINTILLATION DETECTORS; SPONTANEOUS FISSION RADIOISOTOPES; TRANSMUTATION; WASTES; YEARS LIVING RADIOISOTOPES

Optional Information

Notes
23 refs., 6 figs., 1 tab.
Secondary number(s)
INDC(JPN)--205