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的合作。这两个研究小组在量子化学方面都有很高的生产力和公认的专业知识。他们对理解能量通过快速、大质量的粒子在物质中沉积的物理过程有着共同的兴趣。佛罗里达小组在这个问题的理论方面具有优势，而丹麦小组在实验和理论方面具有特别的优势。他们提出了一系列的理论和数值研究有关分子停止在几个系统。特别是，他们将研究小分子中振荡强度分布的矩，并应用一种不太严格的方法来计算较大系统中的停止横截面。在这两种情况下，大量的实验数据都没有经过理论意义的检验。快速，大质量粒子与物质的相互作用是一个具有多种研究意义的领域，如探测器设计和剂量学，光离子束融合计划的靶设计，医学放射治疗和固体中杂质的离子束植入。提出的合作工作将是分子中能量沉积过程的第一个一致的理论研究。

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.