Measurement of Gamma Rays from keV-Neutron Capture Reaction by Zr-90, 94

Journal Article · Mon Mar 13 00:00:00 EST 2006 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.2187887· OSTI ID:20798319

Ohgama, Kazuya; Igashira, Masayuki; Ohsaki, Toshiro ^[1]

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

The {gamma} rays from the neutron capture reaction by 90,94Zr were measured in an incident neutron energy region from 15 to 100 keV and at 550 keV. A neutron time-of-flight method was adopted with a 1.5-ns pulsed neutron source by the 7Li(p,n)7Be reaction and with a large anti-Compton NaI(Tl) spectrometer. A pulse-height weighting technique was applied to observed capture {gamma}-ray pulse-height spectra to derive capture yields. Using the standard capture cross sections of 197Au in ENDF/B-VI, the capture cross sections of 90, 94Zr were obtained with the errors from 6 to 8%. The present results were compared with previous measurements and the evaluations of JENDL-3.3 and ENDF/B-VI. The capture {gamma}-ray spectra of 90, 94Zr were obtained by unfolding the observed capture {gamma}-ray pulse-height spectra. The multiplicities of observed {gamma} rays were derived from the {gamma}-ray spectra.

• OSTI ID: 20798319
• Journal Information: AIP Conference Proceedings, Vol. 819, Issue 1; Conference: 12. international symposium on capture gamma-ray spectroscopy and related topics, Notre Dame, IN (United States), 4-9 Sep 2005; Other Information: DOI: 10.1063/1.2187887; (c) 2006 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
CAPTURE
CROSS SECTIONS
GAMMA DETECTION
GAMMA RADIATION
GAMMA SPECTRA
GOLD 197
KEV RANGE
LITHIUM 7
MULTIPLICITY
NEUTRON REACTIONS
NEUTRON SOURCES
NEUTRONS
NUCLEAR DATA COLLECTIONS
NUCLEAR REACTION YIELD
PULSES
SOLID SCINTILLATION DETECTORS
TIME-OF-FLIGHT METHOD
ZIRCONIUM 90
ZIRCONIUM 94