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

提出了一种测量原子氢原子碰撞二次电子绝对双微分截面的方法(阈值2keV)。将使用调制交叉波束方法，原子氢束将由微波放电技术提供。测得的二次电子的能量范围为1.0 eV至入射能量附近，角度范围为6度至160度。将特别强调入射电子和二次电子在低能范围内的测量。这一研究计划将使碰撞理论和三体连续介质问题的关键检验成为可能，因为氢原子的波函数是已知的。

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.