The energy spectra of cusp electrons from He+ → Ar collisions have been measured in coincidence with the outgoing charge state selected He0,1+,2+ projectiles in the 18.75-75 keV/u energy range. The electron capture to the continuum (ECC), electron loss to the continuum (ELC), and transfer ionization (TI) reaction channels have been identified. In the energy range studied ECC decreases from 86% to 80% and ELC increases strongly from 2.2% to 19.4% with increasing energy. At 18.75 keV/u TI contributes about 12% to the total cusp electron yield whereas at 75 keV/u this fraction decreases to 1.2%. A strong target gas pressure dependence was found for the TI fraction.
ASJC Scopus subject areas
- Nuclear and High Energy Physics