Experiments with lighter load masses and shorter implosion times give higher peak radiated power and suggest quadratic load current dependence.

Our recent current scaling experiments with the Z accelerator and lighter masses suggest quadratic load current dependence of the peak radiated x-ray power and total radiated energy. The load masses were equal to half the ones usually utilized. These loads gave shorter implosion times of the order of 80ns and peak powers of up to 170 TW. The peak powers observed are the highest ever obtained with single array tungsten loads. Assuming that the quadratic scaling is further validated in the continuation of our experimental campaign, a 440-TW peak radiated x-ray power and 3-MJ total x-ray energy is expected from the ZR refurbishment of our Z accelerator. These projections are based on our up-to-date experimental results and current circuit modeling assuming a ∼ 9.5-mg total mass, 20mm diameter, 10-mm height tungsten array loads and 80-ns implosion times. Experimental results and circuit model predictions will be presented.