Auger spectra of carbon and argon following ionization by equal-velocity α particles and deuterons

The spectra of carbon K- and argon L-shell Auger electrons resulting from ionization produced by 0.15-0.50-MeV/amu α particles and deuterons incident on a thin gas cell have been measured. Absolute ionization cross sections were obtained from the Auger-electron yields and, in addition, the yields obtained with equal-velocity projectiles were used to test the projectile z dependence of the ionization process. Intense satellite structure was observed in the Auger spectra and these features were attributed to Auger transitions from multiple vacancy states formed during the collision.