Charge-state dependence of C-60-multifragmentation in collisions of 30 MeVNe2-9+ ions

An experimental study has been made on multifragmentation of free C-60 mole cules using highly charged neon ions at an incident energy of 30 MeV. Produ ction cross sections for fragment ions were obtained systematically at proj ectile charge states q = 2 similar to 9 using time-of-flight coincidence me thod. Total cross sections for all product ions are found to increase appro ximately as q(1.2). On the other hand, cross sections for individual ions e xhibit significantly different q-dependence for different ions. As an overa ll feature, most product ions begin to increase slowly at low q values and then sharply as q(2) for q greater than or equal to 7. Production of C-1(+) ions is found to be enhanced exhibiting a q(2.7) dependence for q greater than or equal to 7.