Few-Body Dynamics of Ionization Processes Induced by Particles and Anti-Particles

本研究的重点是详细研究的少体问题，在物理学中的基本问题之一，未解决的问题。原子电离过程对于实验研究少体问题特别实用，因为与纯粹的捕获或激发过程相比，最终的空间状态涉及至少三个未结合的粒子。PI将通过离子、电子和正电子碰撞研究氦和氢的单电离和双电离，作为少粒子反应的原型。在双电离实验中，人们的兴趣集中在电子-电子关联效应的作用上。更广泛的影响包括理解多体相互作用如何影响从涉及简单系统的原子物理到涉及复杂分子的化学和生物过程到基本粒子反应的领域。

This research focuses on detailed studies of the few-body problem, one of the fundamental, unsolved problems in physics. Atomic ionization processes are particularly practical to experimentally investigate the few-body problem because the final space state involves at least three unbound particles, in contrast to pure capture or excitation processes. The PI will investigate single and double ionization of helium and hydrogen by ion, electron, and positron impact as a prototype for few-particle reactions. In the double ionization experiments the interest is focused on the role of electron-electron correlation effects. The broader impact involves understanding how many-body interactions affect fields ranging from atomic physics involving simple systems to chemical and biological processes involving complex molecules to elementary particle reactions.