Systematic Measurement of keV-Neutron Capture Cross Sections and Capture Gamma-Ray Spectra of Zr Isotopes

Journal Article · Tue May 24 04:00:00 EDT 2005 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.1945160· OSTI ID:20722719

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

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1. Research Laboratory for Nuclear Reactors, Tokyo institute of Technology, 2-12-1 O-okayama, Meguro-ku, Tokyo (Japan)

The capture cross sections of 92Zr were measured in the incident neutron energy region from 15 to 90 keV and at 550 keV. A neutron time-of-flight method was adopted with a 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 92Zr were obtained with the errors from 7% to 11%. 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 92Zr were derived by unfolding observed capture gamma-ray pulse-height spectra.

• OSTI ID: 20722719
• Journal Information: AIP Conference Proceedings, Journal Name: AIP Conference Proceedings Journal Issue: 1 Vol. 769; ISSN 0094-243X; ISSN APCPCS
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
BERYLLIUM 7
CAPTURE
CROSS SECTIONS
EVALUATION
GAMMA RADIATION
GAMMA SPECTRA
GOLD 197
KEV RANGE
LITHIUM 7
NAI DETECTORS
NEUTRON REACTIONS
NEUTRON SOURCES
NEUTRON SPECTRA
NEUTRONS
NUCLEAR DATA COLLECTIONS
NUCLEAR REACTION YIELD
PULSES
TIME-OF-FLIGHT METHOD
ZIRCONIUM 92