U.S.-Argentina Cooperative Research: Theoretical Studies ofRearrangement Processes in Ion-Atom & Ion-Molecular Collision

该奖项支持由堪萨斯州立大学的James McGuire和C.D. Lin以及阿根廷罗萨里奥国立大学的Roberto Rivarola和Ruben Piacentini进行的原子和分子物理学的合作研究。这项工作将涉及原子和分子碰撞理论模型的发展。在高电荷离子的原子碰撞中将研究一类新的非弹性过程。新的离子源、实验室等离子体研究的发展和反物质束的新途径使这一切成为可能。内壳层和壳层现象将包括在内，碰撞速度将从慢到快，单粒子和多粒子激励。这些科学家广泛参与了理论模型的发展，这些模型提供了对新的实验结果的理解，并在此基础上为进一步的实验测试提供了系统的基础。从1981年开始，这项研究将建立在这些科学家之间日益加强的合作基础上。两个小组都发表了关于电子捕获的研究，最初，通过国际会议和通信建立了联系。1988年，McGuire和Rivarola合作研究了通过快速离子从分子中捕获电子，并提交了一篇联合论文。他们刚刚开始研究原子电离过程中的电子分布。这笔经费将使他们之间的合作正规化，并允许与两国的其他理论家进行接触。

This award supports cooperative research in atomic and molecular physics to be conducted by James McGuire and C.D. Lin of Kansas State University and Roberto Rivarola and Ruben Piacentini of the National University of Rosario, Argentina. This work will involve the development of theoretical models of atomic and molecular collisions. A new class of inelastic processes in atomic collisions with highly charged ions will be investigated. This is made possible by new ion sources, developments in the study of laboratory plasmas and new access to antimatter beams. Inner-shell and outer-shell phenomena will be included and the collision speeds will range from slow to fast with single particle and multiparticle excitations. These scientists have been involved extensively in the development of theoretical models which provide an understanding of new experimental results and on which are based systematics for further experimental tests. This research will build on an increasing cooperation between these scientists beginning in 1981. Both groups published studies of electron capture and initially, contact was made through international meetings and correspondence. In 1988, McGuire and Rivarola collaborated on a study of electron capture from molecules by fast ions and have submitted a joint paper. They have just begun a study of electron distribution in atomic ionization. This grant will formalize the cooperation between them and allow contact with other theorists in both countries.