Differential Excitation Cross Sections of Atomic Hydrogen by Electron Impact

电子碰撞导致氢原子的差动激发截面

• 批准号: 9010886
• 负责人: Tong-Wha Shyn
• 金额: $ 6.74万
• 依托单位: Regents of the University of Michigan - Ann Arbor
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1990
• 资助国家: 美国
• 起止时间: 1990-08-01 至 1991-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9010886&HistoricalAwards=false
• 关键词: Differential; Excitation; Cross; Sections; Atomic

A modulated crossed beam method is used to measure cross sections for electron impact excitation of atomic hydrogen to the lower excited atomic levels, n - 2, 3 and 4 from threshold electron impact energy up to 300eV. The objective is to provide a test of basic scattering calculations and to resolve existing discrepancies between theory and experiment. To this end, the measurements are calibrated on an absolute basis, and the angular dependencies are measured, the only measurements of this kind in the United States.

采用调制交叉光束法测量交叉 部分的电子碰撞激发原子氢的 较低的激发原子能级，n - 2，3和4从阈值 电子撞击能量高达300 eV。 目的是提供 基本散射计算的测试，并解决现有的 理论和实验之间的差异。 为此中央 在绝对基础上校准测量值，并且角度 依赖性是衡量的，只有这种衡量， 美国的