Ionization of Atomic Hydrogen and Helium by Low Energy Antiprotons

低能反质子对原子氢和氦的电离

• 批准号: EP/F032757/1
• 负责人: Robert McCullough
• 金额: $ 2.27万
• 依托单位: Queen's University Belfast
• 依托单位国家: 英国
• 项目类别: Research Grant
• 财政年份: 2007
• 资助国家: 英国
• 起止时间: 2007 至 无数据
• 项目状态: 已结题
• 来源: https://gtr.ukri.org/projects?ref=EP%2FF032757%2F1
• 关键词: Ionization; Atomic; Hydrogen; Helium; Low

Experimental studies of collision processes, in which fundamental charged particles ionize simple atoms and molecules, provide the data necessary for our understanding of the many-body interaction and the development a theoretical description of this fundamental yet unsolved problem in collision dynamics. The ionization process plays an important role in astrophysical and technological plasmas and in the dissociation of molecules in the Earth's atmosphere. A comparison of single and multiple ionization of simple atomic and molecular targets by equi-velocity protons, electrons and their corresponding antiproton and positron antiparticles makes it possible to determine the effects of projectile mass and charge.The separation of 'pure' ionization from electron capture or transfer ionization processes can be studied in the special case of antiprotons colliding with light atoms. The absence of electron transfer is a significant simplification and the mass of the projectile enables straight-line trajectories models to be used.

碰撞过程的实验研究，其中基本带电粒子与简单的原子和分子，提供了必要的数据，为我们了解多体相互作用和发展的理论描述这个基本的尚未解决的问题，在碰撞动力学。电离过程在天体物理和技术等离子体以及地球大气层中分子的离解中起着重要作用。通过比较简单的原子和分子靶被等速度质子、电子及其相应的反质子和正电子反粒子的单次电离和多次电离，可以确定抛射体的质量和电荷效应，在反质子与轻原子碰撞的特殊情况下，可以研究“纯”电离与电子俘获或转移电离过程的分离。电子转移的情况下是一个显着的简化和质量的弹丸使直线轨迹模型被使用。