U.S.-Denmark Collaborative Research on a Theoretical Description of the Stopping of Swift Projectiles by Material Foils

该奖项支持佛罗里达大学的John R.Sabin教授和他的几名研究生与丹麦欧登塞大学化学系的Jens Oddershede教授在理论材料研究方面进行合作。这两个研究小组都很有成效，他们在量子化学方面的专业知识也得到了认可。他们都有兴趣了解快速、大质量粒子在物质中沉积能量的物理过程。佛罗里达的小组在这个问题的理论方面提供了优势，而丹麦的小组在实验和理论方面有特别的优势。他们提出了一系列与几个系统中的分子停止有关的理论和数值研究。特别是，他们将研究小分子中振子强度分布的矩，并应用一种不那么严格的方法来计算较大系统的停止截面。在这两种情况下，都存在大量未经理论意义检验的实验数据。快速、大质量粒子与物质的相互作用是一个涉及到各种研究的领域，如探测器设计和剂量学、光束聚变计划的目标设计、医学放射治疗以及固体中杂质的离子束注入。这项拟议的合作工作将是对分子中能量沉积过程的第一次一致的理论研究。

This award supports Professor John R. Sabin of the University of Florida and several of his graduate students to collaborate in theoretical materials research with Professor Jens Oddershede of the Chemistry Department of the Odense University, Denmark. Both research groups are highly productive and recognized for their expertise in quantum chemistry. They share an interest in understanding the physical process of energy deposition in matter by swift, massive particles. The Florida group offers strengths in the theoretical aspects of this question, while the group in Denmark has particular strengths in the experimental and theoretical aspects. They propose a series of theoretical and numerical studies related to molecular stopping in several systems. In particular, they will investigate the moments of oscillator strength distributions in small molecules, and also apply a less rigorous approach to calculate stopping cross sections in larger systems. In both cases, a good deal of experimental data exists that has not been examined for theoretical significance. The interaction of swift, massive particles with matter is a field with implications for such diverse studies as detector design and dosimetry, target design for the light ion beam fusion program, radiation therapy in medicine and ion beam implantation of impurities in solids. The proposed collaborative work will be the first consistent theoretical study of energy deposition processes in molecules.