Thermal conductivity and the isotope effect in Li2O
Thermal conductivity and the isotope effect in Li2O
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DOI：
10.1016/j.fusengdes.2012.08.008
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发表时间：
2012-11
影响因子：
1.7
通讯作者：
H. Lu;S. Murphy;M. Rushton;D. Parfitt;R. Grimes
中科院分区：
文献类型：
--
作者：
H. Lu;S. Murphy;M. Rushton;D. Parfitt;R. Grimes
凝聚态物质的热导率可以通过引入同位素无序来降低，因为不同的同位素作为质量缺陷，散射负责传递热能的声子。在这里，我们调查，使用经典的分子动力学模拟，在陶瓷氧化物Li2O，这将是人工富集与6Li，以提高氚增殖潜力在未来的聚变反应堆中的这种效果的大小。结果表明，虽然同位素效应在较低温度下将是重要的，但在增殖包层的预期操作温度下，它几乎没有影响。
The thermal conductivity of condensed matter can be reduced through the introduction of isotopic disorder as the different isotopes act as mass defects that scatter phonons responsible for the transfer of heat energy. Here we investigate, using classical molecular dynamic simulations, the magnitude of this effect in the ceramic oxide Li2O, which will be artificially enriched with6Li to improve tritium breeding potential in a future fusion reactor. The results show that while the isotope effect will be important at lower temperatures it has little influence at the expected operating temperatures of the breeder blanket.