Origin of low thermal conductivity in nuclear fuels

被引：103

作者：

Yin, Quan ^{[1
]}

Savrasov, Sergey Y. ^{[1
]}

机构：

[1] Univ Calif Davis, Dept Phys, Davis, CA 95616 USA

来源：

PHYSICAL REVIEW LETTERS | 2008年 / 100卷 / 22期

关键词：

D O I：

10.1103/PhysRevLett.100.225504

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Using a novel many-body approach, we report lattice dynamical properties of UO(2) and PuO(2) and uncover various contributions to their thermal conductivities. Via calculated Gruneisen constants, we show that only longitudinal acoustic modes having large phonon group velocities are efficient heat carriers. Despite the fact that some optical modes also show their velocities which are extremely large, they do not participate in the heat transfer due to their unusual anharmonicity. Ways to improve thermal conductivity in these materials are discussed.

引用

页数：4

共 50 条

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[J]. JOURNAL OF NUCLEAR MATERIALS, 1973, 46 (03) : 253 - 258
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