Neutron capture cross section measurements at the beam line 04 of J-PARC/MLF

Journal Article · Mon Nov 12 00:00:00 EST 2012 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.4763378· OSTI ID:22075798

Igashira, Masayuki; Harada, Hideo; Kiyanagi, Yoshiaki ^[1]

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1. Research Laboratory for Nuclear Reactors, Tokyo Institute of Technology, O-okayama 2-12-1-N1-26, Meguro-ku, Tokyo 152-8550 (Japan)

An Accurate Neutron-Nucleus Reaction measurement Instrument (ANNRI) at the beam line 04 of MLF (Material and Life Sciences Experimental Facilities) of J-PARC (Japan Proton Accelerator Research Complex) was installed to measure neutron capture cross sections related to the research and development of innovative nuclear systems, the study on nuclear astrophysics, etc. ANNRI has two gamma-ray spectrometers: one is a Ge detector array placed at 22 m from the coupled type moderator of the spallation neutron source of J-PARC/MLF and the other is a pair of NaI(Tl) detectors at 28 m. Until the 11th of March, 2011, when we had big earthquakes, we measured capture cross sections of Zr-93, Tc-99, Pd-107, I-129, Cm-244, Cm-246, etc. After checking and repairing ANNRI, we restarted measurements, and ANNRI has been open to worldwide users at present.

• OSTI ID: 22075798
• Journal Information: AIP Conference Proceedings, Vol. 1484, Issue 1; Conference: Conference on origin of matter and evolution of galaxies 2011, Wako (Japan), 14-17 Nov 2011; Other Information: (c) 2012 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ASTROPHYSICS
CAPTURE
CROSS SECTIONS
CURIUM 244
CURIUM 246
CURIUM 246 TARGET
GE SEMICONDUCTOR DETECTORS
IODINE 129
IODINE 129 TARGET
J-PARC
MODERATORS
NAI DETECTORS
NEUTRON REACTIONS
NEUTRON SOURCES
PALLADIUM 107
TECHNETIUM 99
TECHNETIUM 99 TARGET
ZIRCONIUM 93
ZIRCONIUM 93 TARGET