Influence Of The Current Wave-Form On Capillary Discharged X-Ray Laser With Capillary Length Of 20cm

X-ray laser has important application in many fields because of its predominant characteristics that can not be replaced by other coherent light sources. Capillary discharge-pumped soft X-ray laser is a compact, tabletop soft X-ray laser, which has great research value and practicability. In this thesis, the influences of the current waveform in the capillary with the length of 20cm are summarized.In theory, Z-pinch effect of plasma is qualitatively analyzed and some important parameters of plasma are estimated.In the research of alteration and repair towards the experiment setup, firstly, the principles and characteristics of each main part of the capillary discharge X-ray laser setup are introduced. Then the electrical source of the prepulse has been examined and repaired. The experimental equipment has been debugged and repaired using the capillary with the length of 15cm. Then the equipment could work stably.In experiment research, firstly, the best Ar pressure range for X-ray laser has been found. The effect of the main-pulse current which have the same amplitude in different Ar pressure and the main-pulse current which have different amplitude in the same Ar pressure to the laser spike have been researched. Secondly, using the technique of connecting the capacitance, got the information about the effect of different shape of the main-pulse current to the laser spike. Discussed the effect of the prepulse current with different amplitude, and the negative effect of the inherent prepulse has been proved. The effect of the electrode with difformity and different material and the effect of the original vacuum have also been discussed. With the experiment of direction of the laser spike, the laser specialty of the X-ray has been proved. Finally, found the origin of the other laser spikes.With the intimately combining of theoretical, experimental research, the effects of the current have been developed, the laser specialty of the X-ray has also been proved. This could be the basic for next experiment on higher energy, saturated of the laser even.