Influence of discharge parameters on capillary discharge-pumped soft X-ray laser

Based on the wave shape of Marx device at National Key Laboratory of Tunable Laser Technology, Harbin Institute of Technology, the influence of discharge parameters upon the temporal evolvement of capillary discharge produced plasmas conditions and the gain coefficient of 3p-3s transition in Neon-like Ar was simulated. In the simulation, argon with a density of 1.07 × 10^-6 g·cm^-3 was filled into a ceramic capillary with an inner diameter of 3.1 mm, the peak of the discharge current pulse was 27.81 kA, and the width of the current pulse was 61.4 ns. The results show that the shorter the pulse rise time is, the higher the gain coefficient is. When the pulse rise time is 20-40 ns, the peak of the current pulse is 25-40 ns, and the current pulse width is 50-70 ns, the higher gain coefficient can be obtained.