Propagation of swift atomic clusters through solids

Abstract Molecular ion yields and neutral and charged fractions are reported for 300 keV H 2 + , DH + , D 2 + , H 3 + , D 3 + , 3 HeD + , 4 HeH + , 3 He 2 + , 4 HeD + , 4 He 3 He + , and 4 He 2 + molecular ions bombarding carbon targets having area densities ranging between 5 and 40 μg/cm 2 . The molecular ion yields are consistent with the predictions of wake-riding theory.