Chemical thermodynamic representation of (U,Pu,Am)O2−x

Osaka, Masahiko; Namekawa, T.; Kurosaki, Ken; Yamanaka, Shinşuke

doi:10.1016/j.jnucmat.2005.04.047

Cited by 17 publications

(15 citation statements)

References 15 publications

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“…Of special note is that this model can cover a wide range of Am content from 1.6% to 50% by introducing the present mass parameters and interactions, together with the variable slope according to Pu inclusion. In particular, the representation of the experimental data for 1.6% of Am content was greatly improved compared with the previous model [11], as shown in Fig. 6 …”

Section: Resultsmentioning

confidence: 85%

“…The authors have adopted this chemical thermodynamic model for the representation of (U,Am)O 2−x and (U,Pu,Am)O 2−x [11]. The experimental data are well represented by introducing an interaction energy between Am oxide and U oxide, together with a preservation rule of the ratio of tetravalent Pu to tetravalent Am regardless of O/M ratios.…”

Section: Introductionmentioning

confidence: 99%

“…, AmO 2−x[19], CeO 2−x[20], (U,Am)O 2−x and (U,Pu,Am)O 2−x[11]. The last two analyses were carried out by the present authors by assuming the same ratio of tetravalentPu to Am, with mass parameters of [UO 2 ], [PuO 2 ], [Pu 4/3 O 2 ], [AmO 2 ] and [Am 5/4 O 2 ], together with an interaction of [Am 5/4 O 2 ] ↔ [UO 2 ].…”

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confidence: 99%

See 2 more Smart Citations

Chemical thermodynamic analysis of americium-containing UO2 and (U,Pu)O2

Osaka

Kurosaki

Yamanaka

2007

Journal of Alloys and Compounds

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Section: Resultsmentioning

confidence: 85%

Section: Introductionmentioning

confidence: 99%

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Chemical thermodynamic analysis of americium-containing UO2 and (U,Pu)O2

Osaka

Kurosaki

Yamanaka

2007

Journal of Alloys and Compounds

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“…1,2) Although the physical properties of (U,Pu,MA)O 2 are quite important to understand the fuel performance and reliability, the data have been scarcely reported due to the difficulties associated with the high radiation fields and scarcities of MA resources. Only the fabrication technology and oxygen potential for (U,Pu,MA)O 2 have been reported by Yoshimochi et al 3) and Osaka et al, 4) respectively. Although the thermal conductivity of (U,MA)O 2 has been reported by Schmidt et al,5) the thermal properties such as the thermal expansion coefficient, heat capacity and thermal conductivity of (U,Pu,MA)O 2 have not been reported until now.…”

Section: Introductionmentioning

confidence: 99%

Molecular Dynamics Studies of Americium-Containing Mixed Oxide Fuels

Kurosaki

Adachi

Katayama

et al. 2006

Journal of Nuclear Science and Technology

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The molecular dynamics (MD) calculation was performed for americium-containing mixed oxide fuels, (U 0:7Àx Pu 0:3 Am x )O 2 (x¼0; 0:016; 0:03; 0:05; 0:1; 0:15), in the temperature range from 300 to around 2,500 K to evaluate the lattice parameter, heat capacity and thermal conductivity. The MD results reveal that the calculated heat capacity and thermal conductivity are at a similar level in the entire composition range, in other words they are scarcely influenced by adding americium up to 15%. This behavior was examined from a view point of a phonon-impurity scattering mechanism.

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“…Osaka et al [7,43], in their model validated for an Am concentration ranging from 1.6% to 50%, make the …”

Section: Xanesmentioning

confidence: 99%