U.S.-Germany Cooperative Research on Heavy Particle IonizingCollision Dynamics

这个奖项支持罗纳德E。奥尔森，迈克尔舒尔茨和两个 密苏里大学罗拉分校的研究生合作， 在原子物理学研究中与霍斯特·施密特-伯金和他的 核物理研究所的大型研究小组 法兰克福大学，德国。 这些科学家正在研究 共同的目标是理解电离碰撞系统。 然而，法兰克福和罗拉的研究小组有不同的看法， 理论和实验优势，每个实验室 拥有独特的设备，测量互补性， 重叠碰撞产物。 他们的努力将大大 通过分享专门知识和平行合作， 协调努力，实现第一个完整的势头 单电离碰撞产物的分布 质子和氦靶 这些数据将提供基准 在最基本的层面上的理论模型，从而 提高对电离碰撞的理解。 作为一个长期 为了实现这一目标，合作的科学家们希望将他们独特的联合收割机 一个实验设备。 这将使他们能够学习 更复杂的过程，如多次电离。 的快速碰撞电离的微观细节 即使经过几十年的研究，人们对离子与原子的关系仍知之甚少。 问题的产生是因为制定 处理“n体”碰撞动力学的理论方法， 缺乏详细的实验数据来严格测试 最基本的理论模型。 虽然目前的水平 研究，如这里提出的，是非常重要的，这是一个 必要的先决条件，模型将有应用程序在许多 其他领域，如了解细胞的微观细节， 重粒子癌症放射治疗或宇宙射线的损伤 卫星计算机中的微处理器损坏。

This award supports Ronald E. Olson, Michael Schulz and two graduate students of the University of Missouri-Rolla to collaborate in atomic physics research with Horst Schmidt-Boecking and his large research group at the Institute for Nuclear Physics of the University of Frankfurt, Germany. These scientists are working with a common goal of understanding ionizing collision systems. However, the Frankfurt and Rolla research groups have different theoretical and experimental strengths, and each laboratory possesses unique equipment that measures complementary and overlapping collision products. Their efforts will be substantially enhanced by sharing their expertise and cooperating in parallel coordinated efforts to achieve the first complete momentum distribution of products in singly ionizing collisions between protons and a Helium target. These data will provide a benchmark for theoretical models at the most fundamental level, and thereby improve understanding of ionizing collisions. As a longer-term goal, the collaborating scientists hope to combine their unique equipment into one experiment. This will enable them to study more complex processes such as multiple ionizations. The microscopic details of ionization induced by fast collisions of ions with atoms are poorly understood, even after decades of study. The problem arises because of the difficulty of formulating theoretical methods to handle the "n-body" collision dynamics and the lack of detailed experimental data to test critically the theoretical models at the most basic level. While the current level of research, such as that proposed here, is very fundamental, it is a necessary prerequisite to models that will have applications in many other fields, such as understanding the microscopic details of cell damage in heavy-particle cancer radiotherapy, or cosmic ray damage to microprocessors in satellite based computers.