Measurement of keV-Neutron Capture Cross Sections and Capture Gamma-Ray Spectra of^<99> Tc
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概要
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The capture cross sections of 99Tc were measured in the incident neutron energy region from 8 to 90 keV and at 190, 330, and 540 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, the capture cross sections of 99Tc were obtained with the error of about 5%. The present results were compared with other measurements and the evaluated values in JENDL-3.2 and 3.3 and ENDF/B-VI. Capture gamma-ray spectra were obtained by unfolding observed capture gamma-ray pulse-height spectra. A change of slopes was observed at 2.2 MeV in the spectra. The multiplicities of observed gamma rays were obtained from the gamma-ray spectra.
- 社団法人 日本原子力学会の論文
- 2003-02-25
著者
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IGASHIRA Masayuki
Research Laboratory for Nuclear Reactors, Tokyo Institute of Technology
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OHSAKI Toshiro
Research Laboratory for Nuclear Reactors, Tokyo Institute of Technology
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Ohsaki Toshiro
Research Laboratory For Nuclear Reactors Tokyo Institute Of Technology
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Igashira M
Tokyo Inst. Of Technol. Tokyo
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Igashra Masayuki
Tokyo Institute Of Technology
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Igashira Masayuki
Research Laboratory For Nuclear Reactors Tokyo Institute Of Technology
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MATSUMOTO Tetsuro
Research Laboratory for Nuclear Reactors, Tokyo Institute of Technology
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Ohsaki T
Tokyo Inst. Of Technol. Tokyo
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Matsumoto T
Research Laboratory For Nuclear Reactors Tokyo Institute Of Technology
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