Oxygen potential measurement of (Pu 0.928Am0.072)O 2-x at high temperatures

Taku Matsumoto; Tatsumi Arima; Yaohiro Inagaki; Kazuya Idemitsu; Masato Kato; Kyoichi Morimoto; Takeo Sunaoshi

doi:10.1080/00223131.2014.986243

Oxygen potential measurement of (Pu _0.928Am_0.072)O _2-x at high temperatures

Taku Matsumoto, Tatsumi Arima, Yaohiro Inagaki, Kazuya Idemitsu, Masato Kato, Kyoichi Morimoto, Takeo Sunaoshi

Quantum Sciences of Materials

Research output: Contribution to journal › Article › peer-review

7 Citations (Scopus)

Abstract

The oxygen potentials of (Pu_0.928Am_0.072)O_2-x were measured as a function of oxygen to metal ratio (O/M) in the temperature range from 1473 to 1873 K by the gas equilibrium method using thermogravimetry. The measured data were about 200 kJ/mol higher in the O/M ratio range from 2.00 to 1.96 and about 50 kJ/mol higher in the reducing region (below O/M ratio = 1.94) compared with those of Pu_O2-x. The measured oxygen potentials were analyzed by the point defect chemistry method. From this analysis, the oxygen potential of (Pu_0.928Am_0.072)O_2-x was represented as a function of O/M ratio and temperature and calculated results were consistent with the measured data.

Original language	English
Pages (from-to)	1296-1302
Number of pages	7
Journal	journal of nuclear science and technology
Volume	52
Issue number	10
DOIs	https://doi.org/10.1080/00223131.2014.986243
Publication status	Published - Oct 3 2015

All Science Journal Classification (ASJC) codes

Nuclear and High Energy Physics
Nuclear Energy and Engineering

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10.1080/00223131.2014.986243

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title = "Oxygen potential measurement of (Pu 0.928Am0.072)O 2-x at high temperatures",

abstract = "The oxygen potentials of (Pu0.928Am0.072)O2-x were measured as a function of oxygen to metal ratio (O/M) in the temperature range from 1473 to 1873 K by the gas equilibrium method using thermogravimetry. The measured data were about 200 kJ/mol higher in the O/M ratio range from 2.00 to 1.96 and about 50 kJ/mol higher in the reducing region (below O/M ratio = 1.94) compared with those of PuO2-x. The measured oxygen potentials were analyzed by the point defect chemistry method. From this analysis, the oxygen potential of (Pu0.928Am0.072)O2-x was represented as a function of O/M ratio and temperature and calculated results were consistent with the measured data.",

author = "Taku Matsumoto and Tatsumi Arima and Yaohiro Inagaki and Kazuya Idemitsu and Masato Kato and Kyoichi Morimoto and Takeo Sunaoshi",

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T1 - Oxygen potential measurement of (Pu 0.928Am0.072)O 2-x at high temperatures

AU - Matsumoto, Taku

AU - Arima, Tatsumi

AU - Inagaki, Yaohiro

AU - Idemitsu, Kazuya

AU - Kato, Masato

AU - Morimoto, Kyoichi

AU - Sunaoshi, Takeo

PY - 2015/10/3

Y1 - 2015/10/3

N2 - The oxygen potentials of (Pu0.928Am0.072)O2-x were measured as a function of oxygen to metal ratio (O/M) in the temperature range from 1473 to 1873 K by the gas equilibrium method using thermogravimetry. The measured data were about 200 kJ/mol higher in the O/M ratio range from 2.00 to 1.96 and about 50 kJ/mol higher in the reducing region (below O/M ratio = 1.94) compared with those of PuO2-x. The measured oxygen potentials were analyzed by the point defect chemistry method. From this analysis, the oxygen potential of (Pu0.928Am0.072)O2-x was represented as a function of O/M ratio and temperature and calculated results were consistent with the measured data.

AB - The oxygen potentials of (Pu0.928Am0.072)O2-x were measured as a function of oxygen to metal ratio (O/M) in the temperature range from 1473 to 1873 K by the gas equilibrium method using thermogravimetry. The measured data were about 200 kJ/mol higher in the O/M ratio range from 2.00 to 1.96 and about 50 kJ/mol higher in the reducing region (below O/M ratio = 1.94) compared with those of PuO2-x. The measured oxygen potentials were analyzed by the point defect chemistry method. From this analysis, the oxygen potential of (Pu0.928Am0.072)O2-x was represented as a function of O/M ratio and temperature and calculated results were consistent with the measured data.

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JO - Journal of Nuclear Science and Technology

JF - Journal of Nuclear Science and Technology

SN - 0022-3131

IS - 10

ER -

Oxygen potential measurement of (Pu _0.928Am_0.072)O _2-x at high temperatures

Abstract

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