The paper reports on some technological modifications of the capillary discharge device, especially in the spark gap region. Passively generated pre-pulse plasma was replaced by an external driver, which can independently control a pre-ionisation capillary current. The time development of the axial soft X-ray radiation of the modified capillary discharge device is reported as well.
We report 200 ps jitter operation of high-voltage air/nitrogen pressurized spark gap triggered by 850 mJ/5 ns Nd:YAG laser. It is studied the delay and the jitter of this spark gap as a function of voltage, energy of laser pulse, gas pressure and angle of incidence of the laser beam. These experiments will resulted in recommendation for construction of low-jitter spark gap in our new pulse-capillary-discharge driver.PACS : 52.80.Mg
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