U.S.-Sweden Cooperative Science: Atomic Structure & Collisions Research at Synchrotron and Tandem Accelerator Facilities

该奖项将支持合作研究 伊万·A·塞尔林大学 田纳西州，诺克斯维尔，和教授斯文Huldt的 隆德大学的安德斯·巴拉尼博士 瑞典斯德哥尔摩的Atomfysik研究所等 在这些机构。 这些物理学家将 调查非常 低能离子，包括它们在 天体物理现象的实验室模拟。 此外，还将进行理论研究 低能量离子捕获电子， 这些离子与金属表面的相互作用。 塞尔林博士和他的 瑞典同事展示了低能离子如何 由X射线撞击产生;这些离子是有用的 在天体物理现象的建模中， 也可用于强离子源。 本研究 将集中于确定其他属性的 X射线撞击形成的低能离子; 开发生产这种产品的其他方法， 离子;和发展实验技术， 他们的使用。 美国和瑞典的合作者有着共同的 本领域的设备和技术的元件， 其中一位瑞典物理学家 用于探索 生产率和温度的低能量 X射线产生的离子。 瑞典调查人员 将受益于X射线源的使用 在他们的国家和美国都没有。 调查人员将受益于瑞典的专业知识， 仪器仪表 这项工作的结果可能有 重要的长期利益，使我们能够 增加我们对天体物理学的理解 通过实验室的实验， 通过促进离子束的产生 用于微加工和其他实验 目的

This award will support collaborative research between Professor Ivan A. Sellin, University of Tennessee, Knoxville, and Professor Sven Huldt of the University of Lund, Dr. Anders Barany of the Atomfysik Institut in Stockholm, Sweden, and others at these institutions. These physicists will investigate the generation and use of very low-energy ions, including their use in the laboratory simulation of astrophysical phenomena. In addition, theoretical investigations will be made of the capture of electrons by low-energy ions, and of the interaction of such ions with metal surfaces. Earlier collaborative work of Dr. Sellin and his Swedish colleagues showed how low-energy ions could be produced by x-ray impact; these ions are useful in the modeling of astrophysical phenomena and can also be used in intense ion sources. This research will focus on determining additional properties of the low-energy ions formed by x-ray impact; on developing additional methods of producing such ions; and on developing experimental techniques for their use. The U.S. and Swedish collaborators share common elements of apparatus and techniques in this field, and one of the Swedish physicists is the developer of the time-of-flight analyzer used to explore production rates and temperatures of the low-energy ions produced by x-rays. The Swedish investigators will benefit from the use of x-ray sources unavailable in their country, and the U.S. investigators will benefit from Swedish expertise in instrumentation. Results of this work may have important long-range benefits by enabling us to increase our understanding of astrophysical phenomena through laboratory experiments, and also by facilitating the production of ion beams suitable for microfabrication and other experimental purposes.