ELECTRON "CUSP" SPECTROSCOPY OF THE FORWARD PEAK IN CONTINUUM ELECTRON CAPTURE AND LOSS IN GASES AND SOLIDS

Abstract

Results of several recent ion-atom and ion-solid collision experiments concerning the forward peak in continuum electron production from electron capture and loss to projectile-centered continuum states are discussed. Emphasis is given to discussion of three recent experiments carried out at the ORNL and BNL tandem accelerators. The first concerns disagreement between theory and experiment on the projectile Z dependence for electron capture to projectile-centered continuum states (ECC) in ion-atom collisions. The second concerns the discovery of unpredicted periodic (interference ?) structure in the electron loss channel (ELC) in ion-atom collisions. The third concerns failure of both ECC and "wakeriding" models of the forward peak characteristics in ion-solid collisions