论文标题
迅速重离子撞击后固体的非热效应
Nonthermal effects in solids after swift heavy ion impact
论文作者
论文摘要
这项贡献是对与固体电子系统超快激发固体潜能的修改有关的非热效应的简要介绍，主要集中在迅速的重离子轨道问题上。我们阐明了晶格上电子（和孔）散射的动能的差异（电子 - 光子耦合，“热效应”）与固体的非平衡势能的松弛（“非热效应”）之间的差异。我们讨论，在不同程度的电子激发下，原子间电位的修饰可能导致各种相变，而不会升高原子温度，即在室温下（非热熔化，超级会议状态的形成）或原子加速，从而导致“靶标的靶心非热加热”。理论上预测的示例由已知的实验观察给出了各种效果。
This contribution is a brief introduction to nonthermal effects related to modifications of the interatomic potential upon ultrafast excitation of the electronic system of solids, primarily focusing on the swift heavy ion track problem. We clarify the difference between the exchange of the kinetic energy of electrons (and holes) scattering on the lattice (electron-phonon coupling, "thermal effects") and the relaxation of the nonequilibrium potential energy of a solid ("nonthermal effects"). We discuss that at different degrees of electronic excitation, the modification of the interatomic potential may result in various phase transitions without an increase of the atomic temperature, i.e., at room temperature (nonthermal melting, formation of the superionic state), or in atomic acceleration causing "nonthermal heating" of the target atoms. Examples of theoretically predicted various effects are given, supported by known experimental observations.
