Device of capillary discharge with pre-pulse and main pulse to excite soft X-ray laser

Based on the introduction on circuit of main pulse and pre-pulse, the scheme about the trigger delay between pre-pulse and main pulse is introduced, and the experimental results about the adjustment of main pulse and pre-pulse are given. After the improvement on the device of capillary discharge soft X-ray laser, the original pre-pulse with over-high current is reduced and a new pre-pulse about tens of amperes is produced by pre-pulse generator. The adjusting results show that the current of pre-pulse is 20 A, and the first peak current of the main pulse is 40.1 kA with 26.6 ns rise-time and 38 ns duration. And the delay time between pre-pulse and main pulse is adjustable from 3 μs to 50 μs. These parameters can meet the need of soft X-ray laser generation.