U.S.-Brazil Cooperative Research: Inelastic Electron Scattering by Atomic and Diatomic Targets

美国-巴西合作研究：原子和双原子目标的非弹性电子散射

• 批准号: 8815384
• 负责人: David Cartwright
• 金额: $ 1.89万
• 依托单位: Los Alamos Scientific Laboratory
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1989
• 资助国家: 美国
• 起止时间: 1989-03-01 至 1992-02-29
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8815384&HistoricalAwards=false
• 关键词: U.S.; Brazil; Cooperative; Research; Inelastic

This award supports cooperative research in theoretical physics to be conducted by David Cartwright, George Csanak and Robert Clark of Los Alamos National Laboratory and Gilda Meneses and Luis Machado of Unicamp in Campinas, Brazil. The topic is the study of inelastic electron scattering by atomic and diatomic targets. They will extend first-order many-body theory and the distorted wave approximation to the excitation of rare-gas and alkaline earth atoms by electron impact. These calculations will be perfomed on open shell targets such as atomic O, N, and F. In addition, the same techniques will be applied to calculations for diatomic molecular targets. Finally, second-order many-body theory will be used to treat both inelastic and elastic electron scattering by helium atoms. These theoretical techniques have been developed over nine years and three previous collaborations between LANL and Unicamp. This work will extend the theoretical and computational capabilities of both groups to more compicated processes of interest in plasma physics. A number of other scientists in both laboratories will be involved in the work including several students. The past cooperation has resulted in seven graduate degrees and fifteen papers at international conferences.

该奖项支持由洛斯阿拉莫斯国家实验室的大卫·卡特赖特、乔治·恰纳克和罗伯特·克拉克以及巴西坎皮纳斯大学的吉尔达·梅内塞斯和路易斯·马查多进行的理论物理合作研究。 该主题是研究原子和双原子目标的非弹性电子散射。 他们将把一阶多体理论和扭曲波近似扩展到电子碰撞对稀有气体和碱土原子的激发。 这些计算将在诸如原子 O、N 和 F 等开壳目标上进行。此外，相同的技术将应用于双原子分子目标的计算。 最后，二阶多体理论将用于处理氦原子的非弹性和弹性电子散射。 这些理论技术经过九年的开发，以及 LANL 和 Unicamp 之前的三次合作。 这项工作将把两个小组的理论和计算能力扩展到等离子体物理学中更复杂的过程。 两个实验室的许多其他科学家将参与这项工作，其中包括几名学生。 过去的合作已获得七个研究生学位并在国际会议上发表十五篇论文。