Diminished Stopping Power for Fast Nitrogen and Oxygen Diclusters in Carbon

摘要

Stopping powers have been measured for N sub 2+ and N exp + ions of 0.5 to 1.8 MeV/atom, for 0 sub 2+ and 0 exp + ions of 1.0 and 1.6 MeV/atom, exp 3 He sub 2+ and exp 3 He exp + of 1.0 MeV/atom and H sub 2+ and H exp + of 0.4 MeV/atom in 2 to 19 mu g/cm exp 2 carbon targets. The ratio of the stopping power for the molecular ion to the sum of the stopping powers for the separated atomic components (stoppoing power ratio) was consistently less than one for the nitrogen and oxygen ions and greater than one for the faster helium and hydrogen ions. (ERA citation 08:028318)