Collisional X-Ray Excitation in Solid and Gaseous Targets by Heavy-Ion Bombardment

Large differences have been found in the x-ray yields produced by 22.5- and 48-MeV iodine ions incident on solid (₃₄Se) and gaseous (₃₅Br and ₃₆Kr) targets. These differences are attributable to the steady-state excitation of the penetrating ion prior to the vacancy producing collision, and yield information on the state of energetic ions in solids.