COMMISSIONING AND INITIAL EXPERIMENTS ON NDCX-II*

The Neutralized Drift Compression Experiment (NDCX-II) is a new induction accelerator facility designed to facilitate user experiments in high energy density laboratory physics, intense beam physics, and materials processing and testing with intense, pulsed ion beams. The facility has completed the initial commissioning phase of its injector, 27-cell solenoid transport lattice, induction accelerator modules and non- neutral pulse compression section. Space-charge- dominated Li + beams carrying 20-50 nC have been generated from the 133 kV pulsed, ~1.0 microsecond (FWHM), 65-mA injector, and compressed to 20-30 ns with 0.75-1.3 A peak currents and amplification factors of 10-20. We report results of non-neutral beam compression and transport studies to generate variable ion beam fluences on to solid targets. We also report on studies of dose rate effects in pulsed ion implantation and on the recombination dynamics of radiation-induced defects in semiconductors using the NDCX-II Li + beam.