Abstract
He atoms and He + ions are scattered with keV energies under a grazing angle of incidence from an atomically flat and clean Ag(1 1 1) surface. We have measured charge fractions of specularly reflected beams and studied the threshold behaviour for ionization of projectiles in terms of kinematically induced Auger ionization. From comparison of data for neutral and ionized projectiles we could show that precise studies on the kinematic onset of ionization can be performed with neutral projectiles. Small but defined fractions of ions survive the scattering event with the surface which affects the evaluation of data close to the threshold owing to a background of the signals for ions.
Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
