Trigger delay system in capillary discharge device with prepulse and main-pulse to excite soft Xray laser

When the capillary discharge device runs with prepulse and mainpulse, its efficiency of energy transferring by bumping to X-ray laser rises. The control of trigger delay time from prepulse to mainpulse is very important for this device. Based on the introduction of the circuit to generate prepulse, the delay circuit which consists of IC chip is applied in the highvoltage fast discharge system by the technology of photoelectric coupling and pulse transformer isolation, the delay time can be adjusted continuously, and the experimental results about the adjustment of pulses are given, the results prove that the delay time of the circuit is from 2μs to 50μs and it is good for producing soft X-ray laser．