RUI: Photoionization and Photorecombination Processes in Atomic Theory

主要的主题是两个电子原子与强激光场的相互作用，这将导致电子脱离。一个重要的机制是再碰撞，在这个过程中，一个电子被从原子中移走，然后在激光场中振荡，与剩余的原子重新碰撞一次或多次。研究发现，两次碰撞比一次碰撞能更有效地去除剩余电子。该计划将使用双电子原子模型对这些双电离机制进行解析和数值研究。它还计划研究光复合，即电子在强激光场存在的情况下与原子离子重新结合。本科生将在计算机编程和分析的项目中做出贡献，同时也将解释双电离过程的物理学。

The primary topic is the interaction of two-electron atoms with intense laser fields, which leads to detachment of the electrons. An important mechanism is recollision, in which one electron is removed from the atom and then oscillates in the laser field, recolliding with the residual atom one or more times. It is found that double collisions can be more effective than single collisions in removing the remaining electron. The plan is to use models of the two electron atom in analytic and numerical studies of these mechanisms of double ionization. It is also planned to study photorecombination, in which electrons recombine with atomic ions in the presence of the intense laser fields. Undergraduate students will contribute to the project in computer programming and analysis, but also in explaining the physics of the double-ionization process.