Electron Scattering by Alkalai Atoms (Physics)

碱原子的电子散射（物理）

• 批准号: 8909202
• 负责人: Barbara Whitten
• 金额: $ 1.42万
• 依托单位: Colorado College
• 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: 1989-07-01 至 1990-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8909202&HistoricalAwards=false
• 关键词: Electron; Scattering; Alkalai; Atoms; Physics

It is proposed to perform detailed comparisons between theory and experiment for electron scattering from alkali atoms. The first phase of the research involves construction of a careful and complete description of the sodium atom, which will then be used to study electron-sodium scattering as a function of energy, angle, electron spin, atom alignment and orientation. The second phase will involve an extension to heavier atoms, particularly cesium, which is of concern for parity violation experiments. The theoretical approach will utilize the R-matrix package of scattering programs, adding a semi-empirical polarization potential to simulate the effect of core electrons on valence and scattered electrons, not summing magnetic quantum numbers, including relativistic effects.

提出对碱原子的电子散射进行详细的理论和实验比较。研究的第一阶段包括对钠原子进行仔细和完整的描述，然后将用于研究电子-钠散射作为能量、角度、电子自旋、原子排列和方向的函数。第二阶段将涉及到更重的原子，特别是铯，这是宇称破坏实验所关注的。理论方法将利用散射程序的r矩阵包，添加半经验极化势来模拟核心电子对价电子和散射电子的影响，而不是将磁量子数相加，包括相对论效应。