Scattering of Oxygen Ions from Argon and Xenon

The forward-angle elastic scattering of 153-Mev oxygen ions from a natural argon target was measured and found to be compatible with the predictions of the sharp-cutoff model using a cutoff l value of 60 and a diffuseness parameter of 3.5. The forward-angle elastic scattering from a natural xenon target was similarly fitted, using a cutoff l value of 91. These would correspond to radius parameters r₀ of the order of 1.43 and 1.47 f, respectively. A survey of the reaction products observed in scattering O¹⁶ ions from a target of enriched Ar⁴⁰ is also reported.