Ion-electron interaction in molecular-dynamics cascades.

Ion-electron interaction in molecular-dynamics cascades.
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分子动力学级联中的离子电子相互作用。

DOI:
10.1103/physreva.40.2287
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发表时间:
1989
期刊:
Physical review. A, General physics
影响因子:
--
通讯作者:
M. Victoria
M. Victoria
中科院分区:
--
文献类型:
--
作者:
A. Caro;M. Victoria

文献摘要

被引文献

相似文献

我们提出了一个简单的模型,将非弹性能量损失结合到高能辐射损伤的分子动力学模拟中,同时通过将离子耦合到热库来描述金属的热导率。这两个表达式都基于停止力的局部密度描述。我们给出了一个描述离子-电子耦合强度的经验表达式,它是局域电子密度的函数。因此,该模型适用于基于密度泛函形式的多体体势的离子-离子相互作用的模拟。
We propose a simple model to incorporate inelastic energy losses into molecular-dynamics simulations of high-energy radiation damage, which at the same time describes the metallic thermal conductivity by coupling the ions to a thermal reservoir. Both expressions are based on a local-density description of stopping power. We provide an empirical expression to describe the strength of the ion-electron coupling, which is a function of the local electronic density. The model is then adequate to those simulations where the ion-ion interactions are obtained from many-body potentials based on density-functional formalism.