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JAEA Reports

Estimation of exchange time for neutron startup sources of HTTR

Ono, Masato; Kozawa, Takayuki; Fujimoto, Nozomu*

JAEA-Technology 2019-012, 15 Pages, 2019/09

JAEA-Technology-2019-012.pdf:2.83MB

The High Temperature Engineering Test Reactor has a neutron source of $$^{252}$$Cf to start up the reactor and to confirm count rates of wide range monitors. The half-life of $$^{252}$$Cf is short, about 2.6 years, so it is necessary to replace at an appropriate time. In order to estimate the period to replace, it is necessary to consider not only the half-life but also the fluctuation of the count rate of the wide range monitor to prevent alarm. For that reason, the method has been derived to predict a minimum count rate from relationship between the count rate and the standard deviation of the count rate of the wide range monitors. As a result of predicting the count rate using this method, it was found that the minimum count rate reaches to 3.0cps in 2022 and 1.5 cps in 2024. Therefore, it is necessary to exchange $$^{252}$$Cf by 2024.

Journal Articles

Effects of grain size on ultrasonic attenuation in type 316L stainless steel

Wan, T.; Naoe, Takashi; Wakui, Takashi; Futakawa, Masatoshi; Obayashi, Hironari; Sasa, Toshinobu

Materials, 10(7), p.753_1 - 753_17, 2017/07

 Times Cited Count:7 Percentile:51.59(Materials Science, Multidisciplinary)

Journal Articles

Energy-resolved small-angle neutron scattering from steel

Oba, Yojiro*; Morooka, Satoshi; Oishi, Kazuki*; Suzuki, Junichi*; Takata, Shinichi; Sato, Nobuhiro*; Inoue, Rintaro*; Tsuchiyama, Toshihiro*; Gilbert, E. P.*; Sugiyama, Masaaki*

Journal of Applied Crystallography, 50(2), p.334 - 339, 2017/04

 Times Cited Count:2 Percentile:65.73(Chemistry, Multidisciplinary)

Journal Articles

Theory of transport properties in the $$p$$-wave superconducting state of Sr$$_2$$RuO$$_4$$; A Microscopic determination of the gap structure

Nomura, Takuji

Journal of the Physical Society of Japan, 74(6), p.1818 - 1829, 2005/06

 Times Cited Count:23 Percentile:26.63(Physics, Multidisciplinary)

We provide a detailed quantitative analysis of transport properties in the $$p$$-wave superconducting state of Sr$$_2$$RuO$$_4$$. Specifically, we calculate ultrasound attenuation rate and electronic thermal conductivity within the mean field approximation. The momentum dependence of the gap function is determined by solving the Eliashberg equation for a three-band Hubbard model with the realistic electronic structure of Sr$$_2$$RuO$$_4$$. Consequently, we obtain the temperature dependence of the transport coefficients in agreement with the experimental results.

JAEA Reports

SHEAT for PC: A Computer code for probabilistic seismic hazard analysis for personal computer, user's manual

Yamada, Hiroyuki; Tsutsumi, Hideaki*; Ebisawa, Katsumi*; Suzuki, Masahide

JAERI-Data/Code 2002-001, 161 Pages, 2002/03

JAERI-Data-Code-2002-001.pdf:6.62MB

no abstracts in English

Journal Articles

Approach to a window coating problem by in-situ transmission monitoring and laser blow-off cleaning developed in the JT-60U Thomson scattering system

Yoshida, Hidetoshi; Naito, Osamu; Hatae, Takaki; Nagashima, Akira

Review of Scientific Instruments, 68(1), p.256 - 257, 1997/01

 Times Cited Count:10 Percentile:36.51(Instruments & Instrumentation)

no abstracts in English

JAEA Reports

Solution for a window coating problem developed in the JT-60U Thomson scattering system

Yoshida, Hidetoshi; Naito, Osamu; Hatae, Takaki; Nagashima, Akira

JAERI-Research 96-062, 25 Pages, 1996/11

JAERI-Research-96-062.pdf:1.17MB

no abstracts in English

Journal Articles

Dependence of attenuation coefficient on penetrating path length in cold neutron radiography

*; *; Matsubayashi, Masahito; *

Fifth World Conf. on Neutron Radiography, 0, p.199 - 205, 1996/00

no abstracts in English

JAEA Reports

Attenuation data of point isotropic neutron sources up to 400MeV in water, ordinary concrete and iron

*; Tanaka, Shunichi; Sakamoto, Yukio; Nakane, Yoshihiro;

JAERI-Data/Code 94-003, 70 Pages, 1994/08

JAERI-Data-Code-94-003.pdf:3.31MB

no abstracts in English

Journal Articles

Tests of new polystyrene-based scintillators

*; *; *; *; *; Kojima, Takuji; *

Nuclear Instruments and Methods in Physics Research A, 311, p.498 - 504, 1992/00

 Times Cited Count:16 Percentile:18.7

no abstracts in English

Journal Articles

External doses due to terrestrial gamma rays on the snow cover

Saito, Kimiaki

Radiation Protection Dosimetry, 35(1), p.31 - 39, 1991/00

no abstracts in English

JAEA Reports

Journal Articles

Multiple Coulomb excitation of $$^{1}$$$$^{6}$$$$^{7}$$Er

; ; ; *; *

Nuclear Physics A, 436, p.518 - 537, 1985/00

no abstracts in English

Oral presentation

Benchmark calculation of the PHITS code for neutron attenuation in iron and concrete on shielding experiments at proton accelerator facilities

Matsuda, Norihiro; Iwamoto, Yosuke; Sato, Tatsuhiko; Hashimoto, Shintaro; Ogawa, Tatsuhiko; Furuta, Takuya; Abe, Shinichiro; Kai, Takeshi; Hosoyamada, Ryuji*; Iwase, Hiroshi*; et al.

no journal, , 

15 (Records 1-15 displayed on this page)
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