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Journal Articles

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Katsumi, Muto,; Koakutsu, Masayuki; Nakazawa, Osamu; Kato, Hiroshi; Ebashi, Takeshi

Saikuru Kiko Giho, (26), 119,133 Pages, 2005/00

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Journal Articles

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Katsumi, Muto,; Koakutsu, Masayuki; Nakazawa, Osamu; Kato, Hiroshi; Ebashi, Takeshi

Saikuru Kiko Giho, (27), 84, 86, 98 Pages, 2005/00

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Journal Articles

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Katsumi, Muto,; Koakutsu, Masayuki; Nakazawa, Osamu; Hayafune, Hiroki; Kato, Hiroshi

Saikuru Kiko Giho, (22), 103 Pages, 2004/00

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Katsumi, Muto,; Koakutsu, Masayuki; Nakazawa, Osamu; Hayafune, Hiroki; Kato, Hiroshi

Saikuru Kiko Giho, (23), 119- Pages, 2004/00

The application of the fluoride volatility process in the reprocessing of fuel from the fast breeder reactor is regarded as one of the economical methods. Plutonium hexafluoride (PuF6), however, reacting with fluorine (F2) and plutonium dioxide (PuO2) as the raw material, is in an unstable condition and tends to remain as a solid compound in the process after decomposing into plutonium tetrafluoride (PuF4). Suitable conditions should be established for the practical use of this process. One of them is to enhance the stability of PuF6. The behaviour of plutonium fluorination and relevant chemical reactions were investigated by referring to sundry literature and by thermodynamic calculation. It was then compared with recent data from laboratory scale experiments for this paper. Results from the theoretical analysis agreed with experimental observation that PuF6 could be formed stably under a high temperature condition (approx.1000 K) with over supply of figher concentration of F2.

Journal Articles

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Muto, K.; Koakutsu, Masayuki; Nakazawa, Osamu; Hayafune, Hiroki; Kato, Hiroshi

Saikuru Kiko Giho, (24), 71 Pages, 2004/00

Focusing on the cover layer materials (as the Radon Barrier Materials), which could have the effect to restrain the radon from scattering into the air and the effect of the radiation shielding, we produced the radon barrier materials with crude bentonite on an experimental basis, using the rotary type comprehensive unit for grinding and mixing, through which we carried out the evaluation of the characteristics thereof.

Journal Articles

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Koakutsu, Masayuki; Nakazawa, Osamu; Kato, Hiroshi; Ebashi, Takeshi

Saikuru Kiko Giho, (25), 120,134 Pages, 2004/00

Focusing on the cover layer materials (as the Radon Barrier Materials), which could have the effect to restrain the radon from scattering into the air and the effect of the radiation shielding, we produced the radon barrier materials with crude bentonite on an experimental basis, using the rotary type comprehensive unit for grinding and mixing, through which we carried out the evaluation of the characteristics thereof.

Journal Articles

Journal Articles

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Makino, Tsutomu; Koakutsu, Masayuki; Nakazawa, Osamu; Sasaki, Yasuo; Kato, Hiroshi

Saikuru Kiko Giho, (20), 124 Pages, 2003/00

None

Journal Articles

None

None; Koakutsu, Masayuki; Nakazawa, Osamu; Hayafune, Hiroki; Kato, Hiroshi

Saikuru Kiko Giho, (21), P. 126, 2003/00

None

Journal Articles

None

; ; Koakutsu, Masayuki; ; Miyamoto, Yasuaki; Takeda, Seiichiro

Saikuru Kiko Giho, (16), 37- Pages, 2002/00

None

JAEA Reports

None

; Koakutsu, Masayuki; ; *; ; ; *

PNC TN8410 97-204, 50 Pages, 1996/06

PNC-TN8410-97-204.pdf:2.06MB

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JAEA Reports

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; Koakutsu, Masayuki; *; Yoshida, Michihiro; ; *;

PNC TN8450 91-006, 77 Pages, 1991/03

PNC-TN8450-91-006.pdf:2.09MB

None

JAEA Reports

None

; Koakutsu, Masayuki; *; Yoshida, Michihiro; ; *;

PNC TN8450 91-005, 103 Pages, 1991/02

PNC-TN8450-91-005.pdf:2.7MB

None

Journal Articles

None

; ; Koakutsu, Masayuki

Donen Giho, (74), 96- Pages, 1990/06

16 (Records 1-16 displayed on this page)
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