Measurement of keV-neutron capture cross-sections and capture gamma-ray spectra of Fe-56 and Fe-57
SCIE
SCOPUS
- Title
- Measurement of keV-neutron capture cross-sections and capture gamma-ray spectra of Fe-56 and Fe-57
- Authors
- Wang, T; Lee, M; Kim, G; Oh, Y; Namkung, W; Ro, TI; Kang, YR; Igashira, M; Katabuchi, T
- Date Issued
- 2010-03-01
- Publisher
- ELSEVIER SCIENCE BV
- Abstract
- The neutron capture cross-sections and the capture gamma-ray spectra of Fe-56 and Fe-57 have been measured in the neutron energy range from 10 to 90 keV. Pulsed key-neutrons were produced from the Li-7(p,n)Be-7 reaction by bombarding a lithium target with a 1.5-ns bunched proton beam from a 3 MV Pelletron accelerator. The incident neutron spectrum on the capture sample was measured using a time-of-flight method with a Li-6-glass detector. The capture gamma-rays emitted from an iron or standard gold sample were detected with a large anti-Compton Nal(Tl) spectrometer. The capture yield of the iron or gold sample was obtained by applying a pulse-height weighting technique to the corresponding capture gamma-ray pulse-height spectrum. The capture cross-sections of Fe-56,Fe-57 were derived with errors less than 5% using the standard capture cross-sections of Au-197. The capture gamma-ray spectra were obtained by unfolding the observed capture gamma-ray pulse-height spectra. The present results for the capture cross-sections were compared with the previous measurements and the evaluated values of ENDF/B-VII.0 and JENDL-3.3. The Maxwellian-averaged capture cross-sections of Fe-56 and Fe-57 at 30 key are derived as 12.22 +/- 2.06 mb and 44.48 +/- 7.56 mb, respectively. (C) 2009 Elsevier B.V. All rights reserved.
- Keywords
- keV-neutron capture cross-sections; Capture gamma-ray spectra; Fe-56,Fe-57; Time-of-flight method; Pulse-height weighting technique; Maxwellian-averaged cross-sections; Anti-Compton Nal(Tl) spectrometer; BARIUM FLUORIDE DETECTOR; NUCLEAR-DATA LIBRARY; SPECTROMETER
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/25561
- DOI
- 10.1016/J.NIMB.2009.11.019
- ISSN
- 0168-583X
- Article Type
- Article
- Citation
- NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS, vol. 268, no. 5, page. 440 - 449, 2010-03-01
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