Ne K-shell fluorescence yield in collisions between Ne-atoms and Ne-ions at 0.6-2.3 MeV

Abstract

Ne K-shell fluorescence yields, ω + K in 0.6-1.9 MeV Ne +−Ne and ω ++ K in 1.3-2.3 MeV Ne ++−Ne collisions, have been obtained by observing the Ne-K X-ray production cross sections and combining them with the Ne-K Auger electron production cross sections by Stolterfoht et al. [2]. The results show a linear increase with increasing collision energy, and run from 0.02 to 0.05. A projectile charge dependence of the fluorescence yield has not been observed within experimental uncertainty. In the present violent collision region, the degree of multiple ionization still increases with increasing collision energies, and the atomic configurations involved are believed to be represented by (1s 0, 1 2s 0, 1 2p 2, 3, 4).