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

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
项目状态：
已结题
起止时间：
1987-06-01 至 1990-05-31
来源：
https://www.nsf.gov/awardsearch/showAward?AWD_ID=8700430&HistoricalAwards=false
关键词：
DoublyDifferentialCrossSectionsSecondary

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英文摘要
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.
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Studies of Absolute Differential Excitation Cross Section of Molecular Oyxgen by Electron Impact
Differential Excitation Cross Sections of Atomic Hydrogen byElectron Impact
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