Thermal conductivity measurement of (Pu,Am)O (x=0.03, 0.07)

Matsumoto, Taku*; Arima, Tatsumi*; Inagaki, Yaohiro*; Idemitsu, Kazuya*; Kato, Masato   ; Morimoto, Kyoichi ; Ogasawara, Masahiro*

Development of minor actinide (MA) bearing MOX fuels has been advanced to reduce high level waste. In the development of such new type fuels, it is important to understand physical properties. The thermal conductivity is one of the important properties for development of the fuels, and effect of PuO and AmO content on thermal conductivity was investigated. A few thermal conductivity of PuO were reported previously, which differ widely in the measured data. The data of Am-containing MOX were also measured, but the effect of Am was unclear because of low Am content. In the present work, thermal conductivity of (Pu,Am)O was measured, and the effect of Am content was evaluated to contribute to analyze thermal conductivity of MA-bearing oxide fuels.