The energy loss of O-16 ions in seven metallic elements in velocity-proportional region

The present work provides previously unpublished stopping powers of O-16 io ns in Ni, Pd, In, Sn, Gd, Lu and Ta in the energy region similar to 1.5-5 M eV. The experimental results are compared with TRIM91, SRIM96 and LSS predi ctions and agree within a few percentages with TRIM91 and SRIM96 calculatio ns. In the present experimental energy region, a linear dependence of stopp ing powers on velocity of projectile ion was observed. The He-4 energy loss is taken as the measure of the sample foil thickness. The effective charge ratios of O-16 ions to hydrogen are calculated and compared with theoretic al predictions. (C) 1999 Published by Elsevier Science B.V. All rights rese rved.