Abnormal behaviour of zero degree delta -electron emission on the projectile ionic charge

Abstract

The 0' delta -electron emission was investigated by an electron-projectile coincidence technique as a function of incoming and outgoing projectile charge state for 0.53 MeV u-1 Cuq+ on He. The electron emission spectra vary strongly with initial and final projectile charge state. For pure ionization channels the cross sections follow for low electron energy the q2-scaling law whereas in the binary encounter regime the scaling is reversed. CTMC calculations are in fair agreement with the experimental data.