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Oshima, Masumi*; Goto, Jun*; Hayakawa, Takehito*; Shinohara, Hirofumi*; Suzuki, Katsuyuki*; Sano, Yuichi*; Asai, Masato; Haraga, Tomoko
Journal of Nuclear Science and Technology, 61(7), p.871 - 882, 2024/07
Times Cited Count：1 Percentile：23.64(Nuclear Science & Technology)Previously we reported a simple algorithmic method of spectral determination method (SDM), which is based on the first principle that a 
-ray spectrum obtained for a sample is a linear superposition of individual spectra of the radioactive nuclides included in the sample and demonstrated that the method is valid for -ray determination. Here we apply it to the spectra obtained by liquid scintillation counter (LSC). In LSC measurements quenching is generally observed and we at first developed its correction method to standard spectra. The SDM code reported in the previous investigation is used to analyze the LSC spectra. Based on the analyses done by using the measured spectra, we concluded that the SDM method is valid in the LSC spectra similarly to the -ray spectra studied in the previous investigation.
Udagawa, Yutaka; Nagase, Fumihisa; Fuketa, Toyoshi
JAERI-Research 2005-020, 40 Pages, 2005/09
JAERI-Research-2005-020.pdf:4.63MB
In order to investigate effects of quenching temperature and cooling rate before quench on cladding ductility reduction under LOCA conditions, samples cut from non-irradiated 17
17-type Zircaloy-4 cladding tubes for PWRs were oxidized in steam at 1373 and 1473 K, cooled at 2 to 7 K/s, and quenched at 1073 to 1373 K. The quenched samples were subjected to ring compression test, microstructure observation, and Vickers hardness test. Quenching temperature decrease obviously increased area fraction of 
phase in the radial cross section of the cladding, and reduced cladding ductility. Slow-cooling rate decrease increased unit size and hardness of precipitated phase, while phase area fraction and cladding ductility were not significantly changed. phase is harder than the surrounding region in the metallic layer and has higher oxygen content, indicating its low ductility. Consequently, increase in the area fraction in the cladding is a main cause of the reduction in cladding ductility with decrease in the quenching temperature.
Lis, S.*; Kimura, Takaumi; Yoshida, Zenko; But, S.*
Journal of Alloys and Compounds, 380(1-2), p.173 - 176, 2004/10
Times Cited Count：6 Percentile：40.24(Chemistry, Physical)no abstracts in English
Kuriyama, Kazuo*; Kazama, K.*; Kato, Takashi*; Yamamoto, Shunya; Aoki, Yasushi; Naramoto, Hiroshi
Journal of Applied Physics, 80(8), p.4488 - 4490, 1996/10
Times Cited Count：1 Percentile：8.19(Physics, Applied)no abstracts in English
Koizumi, Yasuo; ; Tasaka, Kanji
Journal of Nuclear Science and Technology, 24(1), p.61 - 74, 1987/01
Times Cited Count：0 Percentile：0.00(Nuclear Science & Technology)no abstracts in English
; ; Murao, Yoshio
Journal of Nuclear Science and Technology, 23(4), p.315 - 325, 1986/00
Times Cited Count：3 Percentile：40.59(Nuclear Science & Technology)no abstracts in English
; ; ; ; ; Murao, Yoshio
JAERI-M 85-026, 89 Pages, 1985/03
no abstracts in English
; Murao, Yoshio
JAERI-M 84-036, 73 Pages, 1984/03
no abstracts in English
; ; ;
JAERI-M 8726, 21 Pages, 1980/03
no abstracts in English
Hirano, Masashi; Asahi, Yoshiro
Journal of Nuclear Science and Technology, 17(5), p.339 - 350, 1980/00
Times Cited Count：3 Percentile：41.80(Nuclear Science & Technology)no abstracts in English
; ; ;
JAERI-M 8570, 42 Pages, 1979/11
no abstracts in English
; Murao, Yoshio; ; ; Sudo, Yukio; ; ; ; ;
JAERI-M 8169, 369 Pages, 1979/03
no abstracts in English
