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JAEA Reports

JAERI-JNC joint research report; A Study on degradation of structural materials used under the irradiation environment in nuclear reactors

Ueno, Fumiyoshi*; Nagae, Yuji; Nemoto, Yoshiyuki*; Miwa, Yukio*; Takaya, Shigeru; Hoshiya, Taiji; Tsukada, Takashi*; Aoto, Kazumi; Ishii, Toshimitsu*; Omi, Masao*; et al.

JNC TY9400 2005-013, 150 Pages, 2005/09

JNC-TY9400-2005-013.pdf:37.33MB

None

JAEA Reports

JNC-JAERI united research report; A Study on degradation of structural materials under irradiation environment in nuclear reactors (Joint research)

Hoshiya, Taiji; Ueno, Fumiyoshi*; Takaya, Shigeru; Nagae, Yuji; Nemoto, Yoshiyuki*; Miwa, Yukio*; Aoto, Kazumi; Tsukada, Takashi*; Abe, Yasuhiro; Nakamura, Yasuo; et al.

JNC TY9400 2004-026, 53 Pages, 2004/10

JNC-TY9400-2004-026.pdf:22.07MB

Japan Nuclear Cycle Development Institute (JNC) and Japan Atomic Energy Research Institute (JAERI) have started a JNC-JAERI united research program cooperatively in 2003, which has been aimed for efficient progress and synergistic effect on the research activities of both Institutes in order to lead the facing task of unification between JNC and JAERI. This study has been chosen one of the united research themes, and the purpose of it is to clarify damage mechanism of structural materials under irradiation, and then to develop the methods for damage evaluation and detection in earlier stage of progressing process of damage. In fiscal year 2003, magnetic flux density distribution (JNC) and micro-corrosion (JAERI) measurement apparatus were newly developed and equipped in Hot Facilities in two Institutes, respectively. These apparatus were designed and produced in consideration of radiation resistance and remote-controlled operation to equip in hot cells. We will start the study on neutron irradiation damage by employing the two apparatus as the next step.

JAEA Reports

Observation of dummy assembly made of the tight-lattice core using the X-ray CT technique

Katsuyama, Kozo; Nagamine, Tsuyoshi; Matsumoto, Shinichiro

JNC TY9410 2004-001, 54 Pages, 2004/09

JNC-TY9410-2004-001.pdf:14.44MB

In order to contribute to the development of cooling technique for the Tight-Lattice Core used in Reduced-Moderation Water Reactor, which was mainly studied in Japan Atomic Energy Research Institute, the inner condition of Dummy Assembly made of the Tight-Lattice Core was observed with X-ray Computer Tomography (CT) technique. In the observation using X-ray CT, the non-destructive examination technique for the un-irradiated specimens was also established. The results obtained from this study are following.

JAEA Reports

Studies on Actinide Separation Process from High-level Liquid Waste (Document on Collaborative Study)

; ; Morita, Yasuji*; *

JNC TY8400 2002-001, 26 Pages, 2002/03

JNC-TY8400-2002-001.pdf:0.51MB

no abstracts in English

JAEA Reports

None

*

JNC TY9400 2001-018, 50 Pages, 2001/05

JNC-TY9400-2001-018.pdf:1.68MB

no abstracts in English

JAEA Reports

None

Sato, Kazujiro; Takano, Hideki*

JNC TY1410 2001-001, 57 Pages, 2001/04

JNC-TY1410-2001-001.pdf:2.69MB

no abstracts in English

JAEA Reports

None

*

JNC TY9400 2000-020, 24 Pages, 2000/07

JNC-TY9400-2000-020.pdf:0.63MB

no abstracts in English

JAEA Reports

None

; Numata, Kazuyuki*; ; *; Oigawa, Hiroyuki*

JNC TY9400 2000-006, 162 Pages, 2000/04

JNC-TY9400-2000-006.pdf:4.57MB

no abstracts in English

JAEA Reports

Improvement of covariance data for fast reactors

*; *

JNC TJ9400 2000-004, 109 Pages, 2000/02

JNC-TJ9400-2000-004.pdf:4.96MB

We estimated covariances of the JENDL-3.2 data on the nuclides and reactions needed to analyze fast-reactor cores for the past three years, and produced covariance files. The present work was undertaken to re-examine the covariance files and to make some improvements. The covariances improved are the ones for the inelastic scattering cross section of $$^{16}$$O, the total cross section of $$^{23}$$Na, the fission cross section of $$^{235}$$U, the capture cross section of $$^{238}$$U, and the resolved resonance parameters for $$^{238}$$U. Moreover, the covariances of $$^{233}$$U data were newly estimated by the present work. The covariances obtained were compiled in the ENDF-6 format.

JAEA Reports

Development of covariance date for fast reactor cores, (III)

*; *

JNC TJ9400 99-008, 111 Pages, 1999/03

JNC-TJ9400-99-008.pdf:3.91MB

Covariances have been estimated for nuclear data contained in JENDL-3.2. As for Cr and Ni, the physical quantities for which covariances are deduced are cross sections and the first order Legendre-polynomial coefficient for the angular distribution of elastically scattered neutrons. The covariances were estimated by using the same methodology that had been used in the JENDL-3.2 evaluation in order to keep a consistency between mean values and their covariances. In a case where evaluated data were based on experimental data, the covariances were estimated from the same experimental data. For cross section that had been evaluated by nuclear model calculations, the same model was applied to generate the covariances. The covariances obtained were compiled into ENDF-6 format files. The covariances, which had been prepared by the previous fiscal year, were re-examined, and some improvements were performed. Parts of Fe and $$^{235}$$U covariances were updated. Covariances of nu-p and nu-d for $$^{241}$$Pu and of fission neutron spectra for $$^{233,235,238}$$U and $$^{239,240}$$Pu were newly added to data files.

JAEA Reports

None

; ; Oigawa, Hiroyuki*; *

JNC TY9400 98-001, 110 Pages, 1998/10

JNC-TY9400-98-001.pdf:2.77MB

no abstracts in English

JAEA Reports

None

Takano, Hideki*; *

PNC TJ9500 98-002, 126 Pages, 1998/03

PNC-TJ9500-98-002.pdf:2.51MB

None

JAEA Reports

None

*; *

PNC TJ9500 98-001, 102 Pages, 1998/03

PNC-TJ9500-98-001.pdf:5.87MB

None

JAEA Reports

Collaborative study of data-free-way system for advanced nuclear materials; Development results during 1995 & 1996 fiscal years in the second phase program

Kano, Shigeki; Tachi, Yoshiaki; Fujita, Mitsutane*; Kurihara, Yutaka*; Tsuji, Hirokazu*; Shindo, Masami*; Yokoyama, Norio*; Shimura, Kazuki*; Nakajima, Ritsuko*

PNC TY9449 97-001, 109 Pages, 1997/04

PNC-TY9449-97-001.pdf:19.7MB

None

JAEA Reports

Surface modification of materials by ion beam technology

Hayashi, Kazunori; Saito, Junichi; Tachi, Yoshiaki; Kano, Shigeki; Hirakawa, Yasushi; Yoshida, Eiichi; Seguchi, Tadao*; Kasai, Noboru*

PNC TY9500 96-003, 140 Pages, 1996/08

PNC-TY9500-96-003.pdf:22.04MB

None

JAEA Reports

None

*; *; *; *

PNC TJ1500 96-001, 371 Pages, 1996/03

PNC-TJ1500-96-001.pdf:12.4MB

None

JAEA Reports

None

PNC TJ1500 95-002, 62 Pages, 1995/03

PNC-TJ1500-95-002.pdf:4.12MB

no abstracts in English

JAEA Reports

None

PNC TJ1500 95-001, 121 Pages, 1995/03

PNC-TJ1500-95-001.pdf:3.5MB

None

JAEA Reports

None

PNC TJ1500 94-002, 61 Pages, 1994/03

PNC-TJ1500-94-002.pdf:4.61MB

no abstracts in English

160 (Records 1-20 displayed on this page)