Abstract
Mass spectra of positive secondary ions emitted from polycrystalline metal targets bombarded by 70 MeV 79Br 7+ and 100 keV 40ar + ions have been measured under similar conditions in order to identify changes which may be attributed to the increased energy of the projectile. Presented here are results obtained from Al, Ti, V, and Ni foils. A significant enhancement of some low-mass target constituents relative to the atomic metal ions is observed with MeV ion bombardment. Most prominent is the increase in abundance of 16O + secondary ions.
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