Interaction of Low-Energy Positrons with Atoms and Molecules

低能正电子与原子和分子的相互作用

• 批准号: 9876894
• 负责人: Clifford Surko
• 金额: $ 70.63万
• 依托单位: University of California-San Diego
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1999
• 资助国家: 美国
• 起止时间: 1999-07-01 至 2003-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9876894&HistoricalAwards=false
• 关键词: Interaction; Low; Energy; Positrons; Atoms

9876894SurkoThis award supports research in the study of the interaction of positrons with atoms and molecules. A number of physical processes will be investigated, including the determination of low-energy, differential elastic and inelastic scattering cross sections and the excitation of molecular vibrations. Specific attention will be paid to trying to understand the anomalously large annihilation rates observed for molecules containing more than a few atoms and the study of positron annihilation as a function of positron energy near the threshold for positronium atom formation.

9876894Surko该奖项支持正电子与原子和分子相互作用的研究。 一些物理过程将被调查，包括低能量，微分弹性和非弹性散射截面和激发分子振动的测定。 将特别注意试图了解观察到的包含几个以上的原子的分子和研究的正电子湮没作为一个函数的正电子能量的阈值附近的正电子素原子形成的异常大的湮没率。