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

美德重粒子电离碰撞动力学合作研究

• 批准号: 9112815
• 负责人: Ronald Olson
• 金额: $ 1.95万
• 依托单位: Missouri University of Science and Technology
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1992
• 资助国家: 美国
• 起止时间: 1992-03-15 至 1996-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9112815&HistoricalAwards=false
• 关键词: U.S.; Germany; Cooperative; Research; Heavy

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.

该奖项支持 Ronald E. Olson、Michael Schulz 和密苏里大学罗拉分校的两名研究生与 Horst Schmidt-Boecking 及其在德国法兰克福大学核物理研究所的大型研究小组合作进行原子物理研究。 这些科学家的共同目标是了解电离碰撞系统。 然而，法兰克福和罗拉研究小组的理论和实验实力不同，每个实验室都拥有测量互补和重叠碰撞产物的独特设备。 通过分享专业知识和并行协调努力，他们的努力将得到大大加强，以实现质子和氦靶之间的单电离碰撞中产物的首次完整动量分布。 这些数据将为最基本的理论模型提供基准，从而提高对电离碰撞的理解。 作为一个长期目标，合作科学家希望将他们独特的设备结合到一个实验中。 这将使他们能够研究更复杂的过程，例如多次电离。 即使经过数十年的研究，人们对离子与原子快速碰撞引起的电离的微观细节知之甚少。 问题的出现是因为制定处理“n体”碰撞动力学的理论方法很困难，并且缺乏详细的实验数据来在最基本的层面上批判性地测试理论模型。 虽然目前的研究水平（例如本文提出的研究）非常基础，但它是将模型应用于许多其他领域的必要先决条件，例如了解重粒子癌症放射治疗中细胞损伤的微观细节，或卫星计算机中微处理器的宇宙射线损伤。