JOPSS - Search Results

Nishitani, Takeo; Ochiai, Kentaro; Yoshida, Shigeo*; Tanaka, Ryohei*; Wakisaka, Masashi*; Nakao, Makoto*; Sato, Satoshi; Yamauchi, Michinori*; Hori, Junichi; Wada, Masayuki*; et al.

Journal of Nuclear Science and Technology, 41(Suppl.4), p.58 - 61, 2004/03

http://www.tandfonline.com/doi/abs/10.1080/00223131.2004.10875644

no abstracts in English

Journal Articles

A New approach to the D-T neutron monitor using water flow

Verzilov, Y. M.; Ochiai, Kentaro; Nishitani, Takeo

Journal of Nuclear Science and Technology, 41(Suppl.4), p.395 - 398, 2004/03

http://www.tandfonline.com/doi/abs/10.1080/00223131.2004.10875730

no abstracts in English

Journal Articles

Initial results of neutronics experiments for evaluation of tritium production rate in solid breeding blanket

Nishitani, Takeo; Ochiai, Kentaro; Klix, A.; Verzilov, Y. M.; Sato, Satoshi; Yamauchi, Michinori*; Nakao, Makoto*; Hori, Junichi; Enoeda, Mikio

Proceedings of 20th IEEE/NPSS Symposium on Fusion Engineering (SOFE 2003), p.454 - 457, 2003/10

no abstracts in English

JAEA Reports

Feasibility study of the water cherenkov detector as a D-T fusion power monitor in the system using neutron activation of flowing water; First experimental phase

Verzilov, Y. M.; Ochiai, Kentaro; Nishitani, Takeo

JAERI-Research 2003-019, 25 Pages, 2003/09

JAERI-Research-2003-019.pdf:2.42MB

no abstracts in English

Journal Articles

Measurement of radiation skyshine with D-T neutron source

Yoshida, Shigeo*; Nishitani, Takeo; Ochiai, Kentaro; Kaneko, Junichi*; Hori, Junichi; Sato, Satoshi; Yamauchi, Michinori*; Tanaka, Ryohei*; Nakao, Makoto*; Wada, Masayuki*; et al.

Fusion Engineering and Design, 69(1-4), p.637 - 641, 2003/09

https://doi.org/10.1016/S0920-3796(03)00196-0

Times Cited Count：9 Percentile：52.81(Nuclear Science & Technology)

no abstracts in English

JAEA Reports

Secondary -ray measurements on the D-T neutron skyshine experiments

Tanaka, Ryohei*; Ochiai, Kentaro; Nakao, Makoto*; Yamauchi, Michinori*; Hori, Junichi; Wada, Masayuki*; Sato, Satoshi; Nishitani, Takeo

JAERI-Tech 2003-063, 62 Pages, 2003/07

JAERI-Tech-2003-063.pdf:3.41MB

no abstracts in English

Journal Articles

Radioactivity production around the surface of a cooling water pipe in a D-T fusion reactor by sequential charged particle reactions

Hori, Junichi; Maekawa, Fujio; Wada, Masayuki*; Ochiai, Kentaro; Yamauchi, Michinori*; Morimoto, Yuichi*; Terada, Yasuaki; Klix, A.; Nishitani, Takeo

Fusion Engineering and Design, 63-64, p.271 - 276, 2002/12

https://doi.org/10.1016/S0920-3796(02)00127-8

Times Cited Count：2 Percentile：16.55(Nuclear Science & Technology)

In order to the waste management method and the safety design of future D-T fusion reactor, it is important to consider the radioactivity productions via not only primary neutron reactions but also sequential charged particle reactions (SCPR). Especially, on the surface of a coolant channel many recoiled protons are generated by the neutron irradiation with coolant water, so it is apprehensive that the undesirable radioactive nuclide production yields via SCPR are enhanced. In this work, the laminated sample pieces of fusion material foils (V, Fe, W, Ti, Pb, Cu) were made and attached on a polyethylene board to simulate water flowing inside a coolant channel. They were irradiated with D-T neutrons. The effective radioactivity cross section and the depth distribution of the radioactivity production yields due to SCPR were obtained for each material. On the other hand, the estimated values were compared with the experimental ones.

JAEA Reports

Experimental study of material activation of reduced activation ferritic steel F82H by D-T neutron irradiation

Terada, Yasuaki*; Ochiai, Kentaro; Sato, Satoshi; Wada, Masayuki*; Klix, A.; Yamauchi, Michinori*; Hori, Junichi; Nishitani, Takeo

JAERI-Research 2002-019, 70 Pages, 2002/10

JAERI-Research-2002-019.pdf:8.47MB

D-T neutron irradiation experiments have been carried out with a F82H-containing breeding blanket mock-up of a fusion in order to investigate the activation characteristics of F82H low activation stainless steel. We have measured reaction rates producing 54Mn, 56Mn, 51Cr and 187W in foils of F82H, chromium and tungsten. MCNP calculations were done with evaluated nuclear data from the JENDL-3.2 and the FENDL/E-2.0 files and the results were compared with the measured values. The comparison shows that by using the current data files the reaction rates obtained from the calculations will be overestimated by up to 10-20% for 54Mn, 56Mn and 51Cr, up to 30-40% for 187W, respectively. The calculated values for tungsten are different with the evaluated nuclear data library, which shows that the neutron capture cross sections of tungsten have discrepancy in the resonance region for each nuclear data libraries.

Journal Articles

Benchmark experiment on silicon carbide with D-T neutrons and validation of nuclear data libraries

Maekawa, Fujio; Ochiai, Kentaro; Shibata, Keiichiro*; Kasugai, Yoshimi; Wada, Masayuki*; Morimoto, Yuichi*; Takeuchi, Hiroshi

Fusion Engineering and Design, 58-59, p.595 - 600, 2001/11

https://doi.org/10.1016/S0920-3796(01)00514-2

Times Cited Count：12 Percentile：64.23(Nuclear Science & Technology)

no abstracts in English

Journal Articles

Improvement of neutron detection efficiency with high sensitive CR-39 track detector

Oda, Keiji*; Ichijo, H.*; Miyawaki, Nobumasa*; Yamauchi, Tomoya*; Nakane, Yoshihiro

Radiation Measurements, 34(1-6), p.171 - 175, 2001/06

https://doi.org/10.1016/S1350-4487(01)00145-7

Times Cited Count：7 Percentile：48.43(Nuclear Science & Technology)

no abstracts in English

JAEA Reports

Technical feasibility study for the D-T neutron monitor using activation of flowing water

Uno, Yoshitomo; Kaneko, Junichi; Nishitani, Takeo; Maekawa, Fujio; Tanaka, Teruya; Ikeda, Yujiro; Takeuchi, Hiroshi

JAERI-Research 2001-007, 42 Pages, 2001/03

JAERI-Research-2001-007.pdf:8.74MB

no abstracts in English

Journal Articles

Neutronics experiments for ITER at JAERI/FNS

Konno, Chikara; Maekawa, Fujio; Kasugai, Yoshimi; Uno, Yoshitomo; Kaneko, Junichi; Nishitani, Takeo; Wada, Masayuki*; Ikeda, Yujiro; Takeuchi, Hiroshi

Nuclear Fusion, 41(3), p.333 - 337, 2001/03

https://doi.org/10.1088/0029-5515/41/3/311

Times Cited Count：3 Percentile：10.82(Physics, Fluids & Plasmas)

no abstracts in English

Journal Articles

Experimental investigation on streaming due to a gap between blanket modules in ITER

Konno, Chikara; Maekawa, Fujio; Oyama, Yukio; Uno, Yoshitomo; Kasugai, Yoshimi; Wada, Masayuki*; Maekawa, Hiroshi; Ikeda, Yujiro

Journal of Nuclear Science and Technology, 37(Suppl.1), p.540 - 544, 2000/03

https://doi.org/10.1080/00223131.2000.10874946

no abstracts in English

Journal Articles

Benchmark experiment on vanadium with D-T neutrons and validation of evaluated nuclear data libraries by analysis of the experiment

Maekawa, Fujio; Kasugai, Yoshimi; Konno, Chikara; Murata, Isao*; Kokooo*; Wada, Masayuki*; Oyama, Yukio; Ikeda, Yujiro; Takahashi, Akito*

Journal of Nuclear Science and Technology, 36(3), p.242 - 249, 1999/03

https://doi.org/10.3327/jnst.36.242

Times Cited Count：8 Percentile：49.75(Nuclear Science & Technology)

no abstracts in English

Journal Articles

Validation of nuclear calculations with the FENDL/E-1.1 and JENDL fusion file based on a bulk-shielding experiment of a large type 316 stainless steel assembly

Konno, Chikara; Maekawa, Fujio; Oyama, Yukio; Ikeda, Yujiro; Wada, Masayuki*; Maekawa, Hiroshi

Fusion Technology, 34(1), p.6 - 17, 1998/08

no abstracts in English

Journal Articles

Decay heat measurement on aluminum, copper and type 304 stainless steel irradiated by D-T neutrons

Maekawa, Fujio; Ikeda, Yujiro; E.T.Cheng*

Fusion Engineering and Design, 42, p.229 - 233, 1998/00

https://doi.org/10.1016/S0920-3796(98)00378-0

Times Cited Count：3 Percentile：31.63(Nuclear Science & Technology)

no abstracts in English

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Study on neutron beam pulse width dependence in the nuclear fuel measurement by the neutron resonance transmission analysis

Integral experiments for verification of tritium production on the beryllium/lithium titanate blanket mock-up with a one-breeder layer

Activity report of the Fusion Neutronics Source from April 1, 2001 to March 31, 2004

Analysis of impurities in beryllium, affecting evaluation of the tritium breeding ratio

D-T neutron skyshine experiments and the MCNP analysis

A New approach to the D-T neutron monitor using water flow

Initial results of neutronics experiments for evaluation of tritium production rate in solid breeding blanket

Feasibility study of the water cherenkov detector as a D-T fusion power monitor in the system using neutron activation of flowing water; First experimental phase

Measurement of radiation skyshine with D-T neutron source

Secondary -ray measurements on the D-T neutron skyshine experiments

Radioactivity production around the surface of a cooling water pipe in a D-T fusion reactor by sequential charged particle reactions

Experimental study of material activation of reduced activation ferritic steel F82H by D-T neutron irradiation

Benchmark experiment on silicon carbide with D-T neutrons and validation of nuclear data libraries

Improvement of neutron detection efficiency with high sensitive CR-39 track detector

Technical feasibility study for the D-T neutron monitor using activation of flowing water

Neutronics experiments for ITER at JAERI/FNS

Experimental investigation on streaming due to a gap between blanket modules in ITER

Benchmark experiment on vanadium with D-T neutrons and validation of evaluated nuclear data libraries by analysis of the experiment

Validation of nuclear calculations with the FENDL/E-1.1 and JENDL fusion file based on a bulk-shielding experiment of a large type 316 stainless steel assembly

Decay heat measurement on aluminum, copper and type 304 stainless steel irradiated by D-T neutrons