ABSTRACT
In this paper we report the results of the numerical analysis of two different efficient schemes of compact, X-ray lasers recently realized experimentally.
Capillary Discharge: a) Modeling confirmed that the experiments reported in the Proceedings have achieved the saturation limit in the J=0-1 line of Ne-like Ar capillary discharge soft X-ray amplifier [1]. b) A new technique to govern the charapteristics of discharge-pumped soft X-ray lasers, the use of external magnetic field is analyzed. The physics of discharge in an external magnetic field responsible for improved beam quality and enhanced intensity is explained. At high magnetic field Zeeman effect was found to affect line broadening and laser action, c) The importance of wall effects and mechanisms of wall evaporation by radiation and heat conduction was analyzed, d) The contribution of transient kinetics effects is found to be noticeable in capillary discharge, e) Comparison with experiment showed agreement, in the dynamics of plasma, X-ray laser emission and spontaneous radiation behavior.
Laser Plasma: a) It has been shown that, the strong enhancement of the gain on 32.6nm 3p-3s transition is caused by transient effects in Ne-like Ti obtained in the laser produced plasma with picosecond pulse irradiation b) The transient, nature of inversion on the 3d-3p transition is found c) Computations-show that, surface modifications under multiple shots at, the sarite target place catise an enhancement, of X-ray generation due to an increase of the density, effective plasma depth and a decrease of refraction.
