Atomistic pathways for dislocation motion in three dimensions

这是一项为劳伦斯利弗莫尔国家实验室高级科学家Vasily V. Bulatov博士提供访问奖学金的提案，以便在15个月的时间内进行两次访问，共计三个月。我们提出了一个具体的短期工作项目来研究FCC金属中交叉滑移的两种原子尺度机制：Freidel-Escaig模型和fleischer模型之间的竞争。这是位错理论中尚未解决的问题：是什么条件使一种过程优于另一种过程？此外，我们期待通过这些访问在我们两个机构之间发展富有成效的互动。

This is a proposal to support a visiting fellowship for Dr Vasily V. Bulatov, a Senior Scientist at the Lawrence LivermoreNational Laboratoy, to enable two visits covering a total of threemonths over a 15 month period. We propose a specific short project ofwork to study the competition between two atomic-scale mechanisms ofcross slip in FCC metals: the Freidel-Escaig and the Fleischermodels. This is an unresolved question in dislocation theory:what are the conditions that favour the one process over the other? In additon we anticipate a fruitful interaction between our twoinstitutions to develop from these visits.