U.S.-Denmark Collaborative Research on Collisions of Ions with Circular-State Atoms

该奖项支持教授基思麦克亚当和其他人的 他在肯塔基州大学的研究小组 与E.教授合作进行物理研究。霍斯达尔- 奥胡斯大学物理研究所的佩德森说， 丹麦。他们将研究单个粒子的碰撞 带电离子对高激发里德堡原子的目标， 最大角动量的状态，称为圆形状态。 创建这些状态的方法最近已被 但实际上没有任何调查 它们的碰撞特性。 这个提议的理由 突破性的工作需要结合专业知识， 在两个合作小组和独特的设施， 奥胡斯物理研究所 美团 在离子里德堡原子方面贡献了大量的专业知识 碰撞和各种分析技术。 丹麦 研究员是电子领域的一流研究人员 捕获过程和循环状态生产。 的 碰撞测量将使用激光进行， 丹麦研究所的低能离子束， 必要的圆形状态碰撞目标正在被 安装在专用的散射装置中。 这个项目将阐明电子学中的新现象 俘获和角动量变化碰撞. 中间速度。 没有高浓度的碰撞研究 角动量或圆态里德堡原子， 入射离子的实验。 一个人的观察 电荷转移中的对准依赖性是非常新的，甚至 对于目标的最低非各向同性状态， 预计将刺激理论与 实验 有机会汇集最新的 技术和研究人员独特的成就， 研究“三体问题”所需的领域 量子力学和经典力学的界限是 科学进步的绝佳机会。

This award supports Professor Keith MacAdam and others of his research group at the University of Kentucky to collaborate in physics research with Professor E. Horsdal- Pedersen of the Institute of Physics, University of Aarhus, Denmark. They will investigate the collisions of singly charged ions on a target of highly excited Rydberg atoms in states of maximum angular momentum, called circular-states. Methods for creating these states have recently been developed, but there has been virtually no investigation yet of their collisional properties. This proposed ground breaking work requires the combination of expertise found in the two collaborating groups and the unique facilities of the Institute of Physics at Aarhus. The U.S. group contributes substantial expertise in ion-Rydberg atom collisions and various analytical techniques. The Danish investigator is a first class researcher in electron capture processes and circular state production. The collision measurements will be carried out using lasers and low energy ion beams at the Danish Institute, where the necessary circular-state collision target is being installed in a dedicated scattering apparatus. This project will elucidate new phenomena in electron capture and angular-momentum changing collisions at intermediate velocities. No collision studies of high angular momentum or circular state Rydberg atoms with incident ions have ever been done. The observation of an alignment dependence in charge transfer is very new, even for the lowest non-isotropic state of a target, and it is expected to stimulate new interactions between theory and experiment. The opportunity to bring together the newest techniques and researchers uniquely accomplished in the required areas for a study of the "Three Body Problem" at the boundary of quantum and classical mechanics is an outstanding opportunity for scientific progress.