Collisions of Ions and X-Rays with Atoms, Molecules, and Solids (Physics)

这项工作包括七个基于加速器的原子物理实验和几个平行的理论研究项目，这些项目涉及高速、高度电离的射束与目标原子、分子和固体的碰撞，以及X射线与原子和分子的碰撞。实验工作将由一群大学用户在ORNL、斯坦福(SSRL)、BNL(NSLS)、康奈尔(国际象棋)、法兰克福-达姆施塔特(GSI)和卡昂(GANIL)的加速器设施进行。具体的研究课题包括：(1)反冲离子电荷卫星的电子相关效应的研究；(2)分子碎裂中的电子共享和能量分布的研究；(3)低能电荷向多电荷离子转移的研究；(4)电子俘获和连续态损失的研究：(5)15~35 MeV/u重离子穿过固体产生电子；(6)双激发He靶自电离的幅度干扰；(7)快速、高电荷态的射弹撞击气体靶所产生的低能量、高电荷的反冲离子；(8)与离子的电子碰撞电离相符合的俄歇电子。

This work incorporates seven accelerator-based atomic physics experiments and several parallel theoretical research projects concerning collisions of high-velocity, highly ionized projectiles with target atoms, molecules, and solids, and of X rays with atoms and molecules. The experimental work is to be carried out by a group of university users at accelerator facilities at ORNL; Stanford (SSRL); BNL (NSLS); Cornell (CHESS); Frankfurt-Darmstadt (GSI); and Caen (GANIL). Specific topics of investigation include: (1) the study of shake-up and shake-off electron correlation effects on recoil ion charge satellites; (2) the study of electron sharing and energy distributions in molecular fragmentation; (3) the study of low energy charge transfer to multiply charged ions; (4) studies of electron capture and loss to projectile-centered continuum states; (5) electron production by 15 to 35 MeV/u heavy ions traversing solids; (6) interference of amplitudes for autoionization of doubly excited He targets; (7) low energy, highly charged recoil ions produced by impact of fast, high charge state projectiles on gas targets; and (8) Auger electrons in coincidence with electron impact ionization of ions.