Coincidence Measurements ofNe+-Ne Collisions

Abstract

A study is made of single collisions of keV-energy Ne ions with Ne atoms wherein both particles scattered from the same encounter are detected in coincidence. The charge states $m$ of the scattered incident particle and $n$ of the recoiling target particle are determined. The relative probability of the ($m,n$) reaction and the associated inelastic energy loss are measured as to their dependence upon the scattering angles and the incident energy $T_0$. The statistical model proposed by Everhart and Kessel is used to analyze the data. At the higher energies ($T_0$ from 150 to 400 keV), a double structure is found in the values of inelastic energy loss. This structure is attributed to a $K$-shell vacancy found with low probability in some of the neon particles after the collision. The expected Auger electrons are detected and found to have 750-eV energy.