Study of Electron Correlation in Atoms by Impulsive Double Ionization

脉冲双电离研究原子中的电子相关性

• 批准号: 9987870
• 负责人: John Doering
• 金额: $ 45万
• 依托单位: Johns Hopkins University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2000
• 资助国家: 美国
• 起止时间: 2000-08-15 至 2005-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9987870&HistoricalAwards=false
• 关键词: Study; Electron; Correlation; Atoms; Impulsive

This project focuses on an experimental investigation of the pairwise correlated motion of electrons in atoms through measurement of electron-pair momentum densities. The experiment is based on electron-impact double ionization, in which a projectile electron is used to knock two electrons out of the target atom simultaneously; all three electrons are then detected in a triple coincidence measurement. Within the limits of three-body mechanics, the results can be used to determine the relative motion of the two target electrons. The experiments will concentrate on using the magnesium atom as a target, and a new apparatus will allow for an increase in the coincidence data rate that will make it possible to reach the precision necessary to obtain meaningful electron-pair-momentum densities for comparison with theoretical results.

该项目的重点是通过测量电子对动量密度来对原子中电子的成对相关运动进行实验研究。 该实验基于电子撞击双电离，其中使用抛射电子同时将两个电子从目标原子中击出； 然后在三重符合测量中检测到所有三个电子。 在三体力学的限制内，结果可用于确定两个目标电子的相对运动。 实验将集中于使用镁原子作为目标，新设备将允许提高重合数据速率，从而有可能达到获得有意义的电子对动量密度所需的精度，以便与理论结果进行比较。