U.S.-Germany Cooperative Research: Core Excitation of Atomic and Solid Li by Photons and Ions

美德合作研究：光子和离子对原子和固体锂的核心激发

• 批准号: 0104303
• 负责人: John Tanis
• 金额: $ 1.48万
• 依托单位: Western Michigan University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2001
• 资助国家: 美国
• 起止时间: 2001-08-15 至 2005-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0104303&HistoricalAwards=false
• 关键词: U.S.; Germany; Cooperative; Research; Core

0104303TanisThis award supports John Tanis and students of Western Michigan University to cooperate with Nikolaus Stolterfoht of the Hahn Meitner Institute in Berlin, Germany. The research will focus on the investigation of double-core vacancy production by ions and photons in three-electron systems. The use of three-electron systems enables a clear interpretation of the results of measurements, and the relative simplicity of the systems lends itself to theoretical analysis. A core vacancy in an atom or ion can occur when an inner-shell electron is excited or ionized through collision with a photon or a charged particle. If two such vacancies are produced in a single collision, the mechanisms for the production of the double-core vacancies can involve electron correlation effects. As a result, the study of such processes gives insight into the atomic structure and collisional dynamics of systems with multiply interacting particles. Complementary facilities and expertise in the German and U.S. groups promise a wide range of new results from various perspectives.

0104303Tanis该奖项支持John Tanis和西密歇根大学的学生与德国柏林Hahn Meitner研究所的Nikolaus Stolterfoht合作。这项研究将集中于三电子系统中离子和光子产生双核空位的研究。使用三电子系统能够清楚地解释测量结果，并且该系统的相对简单有助于理论分析。当内壳层电子通过与光子或带电粒子的碰撞而被激发或电离时，原子或离子中的核心空位可能会发生。如果在一次碰撞中产生两个这样的空位，则产生双核空位的机制可能涉及电子关联效应。因此，对这种过程的研究有助于深入了解具有多个相互作用粒子的系统的原子结构和碰撞动力学。德国和美国集团的互补设施和专业知识有望从不同角度取得广泛的新成果。