Doubly Differential Cross Sections of Secondary Electrons Ejected from Atomic Hydrogen by Electron Impact (Physics)

电子碰撞从原子氢中喷射出的二次电子的双微分截面（物理）

• 批准号: 8700430
• 负责人: Tong-Wha Shyn
• 金额: $ 12.27万
• 依托单位: Regents of the University of Michigan - Ann Arbor
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1987
• 资助国家: 美国
• 起止时间: 1987-06-01 至 1990-05-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8700430&HistoricalAwards=false
• 关键词: Doubly; Differential; Cross; Sections; Secondary

It is proposed to measure absolute doubly differential cross sections for secondary electrons ejected from atomic hydrogen by electron impact (threshold 2 KeV). A modulated crossed-beammethod will be used, and the atomic hydrogen beam will be provided by a microwave discharge technique. The energy and angular range of the measured secondary electrons will be from 1.0 eV to near the incident energy and from 6 to 160 degrees, respectively. A particular emphasis will be on the measurements in the low energy range for both incident and secondary electrons. This research program will enable a crucial test of the collision theory and three body continuum problem because the wave functions of atomic hydrogen are known.

提出了测量绝对双微分 原子发射二次电子的截面 氢通过电子碰撞（阈值2 KeV）。 调制 将使用交叉束方法，氢原子束 将通过微波放电技术提供。 的 测量的二次电子的能量和角度范围 将是从1.0 eV到接近入射能量和从6到1.0 eV。 分别为160度。 将特别强调 在低能量范围内对入射和 次级电子 这项研究计划将使一个关键的测试， 碰撞理论和三体连续体问题，因为 氢原子的波函数是已知的。