Ion Atom Collisions: Correlated Systems (Physics)

离子原子碰撞：相关系统（物理）

• 批准号: 9009717
• 负责人: John Reading
• 金额: $ 27万
• 依托单位: Texas A&M Research Foundation
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1990
• 资助国家: 美国
• 起止时间: 1990-09-01 至 1994-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9009717&HistoricalAwards=false
• 关键词: Ion; Atom; Collisions; Correlated; Systems

The development of beams of fast bare ions in the last two decades has allowed atomic physicists to vary the coupling constant in non-trivial, ion-atom reactions and much has been learned. In real atoms the electrons provide a wide range of velocity scales. Thus, it becomes important to develop the theoretical and computational tools to describe excitation, ionization and charge transfer over broad energy regimes. The present work is based on a variational expansion of the scattering wavefunction in a truncated Hilbert space. The method goes beyond the independent particle model to describe an ion perturbing a fully correlated, two electron atom and given an interpretation of two electron pseudostates, allows a complete description of such systems. The eventual goal is to explore reacting, relativistic many-body systems.

近两年来快裸离子束的发展 几十年来，原子物理学家已经能够改变耦合， 在非平凡的离子-原子反应中是恒定的， 学 在真实的原子中，电子提供了广泛的 速度标度 因此，开发 理论和计算工具来描述激励， 离子化和电荷转移。 的 目前的工作是基于变分展开的 截断希尔伯特空间中的散射波函数。 的 方法超越了独立粒子模型来描述 一个离子扰动一个完全相关的双电子原子， 给出了两个电子赝态的解释，允许 这类系统的完整描述。 最终目标是 探索相互作用的相对论多体系统