论文标题
一次碰撞事件引起的过热固态
Superheated solid state induced by a single collision event
论文作者
论文摘要
来自脉冲和连续辐射源的高能入射颗粒可以通过产生空置互化对和其他更复杂的缺陷来对材料的结构产生重大损害，这通常导致局部熔化。在这项工作中，我们通过分子动力学模拟在$ \ sim $ 1.5 keV的单个PKA事件引起的BCC钨中，通过分子动力学仿真进行了证据。尽管这种高度不均匀的能量注入和均匀熔融之间存在明显的差异，但获得的过热固态的寿命（达到200 ps）的寿命是通过等待时间分布与先前关于Z-Method方法中超热的研究一致的。
High-energy incident particles from both pulsed and continuous radiation sources can induce significant damage to the structure of a material by creating vacancy-interstitial pairs and other more complex defects, and this leads typically to localized melting. In this work, we present evidence via molecular dynamics simulations of a superheated solid state in BCC tungsten induced by single PKA events of $\sim$ 1.5 keV of energy. Despite the striking difference between this highly inhomogeneous energy injection and homogeneous melting, the lifetime of the obtained superheated solid state, reaching up to 200 ps, is described through a waiting time distribution in agreement with previous studies on superheating in the Z-method methodology.
