Short wavelength X-ray emission generated by high intensity laser irradiation on Xe clusters

We extend the study of the short wavelength X-ray emission from inner-shell excited states in high-density hot plasmas generated by high intensity laser irradiation on Xe clusters. We discuss the effects of electron densities and temperatures on the X-ray emission. The X-rays are emitted from the inner-shell excited state of highly charged ions (Xe35+) only for the density of more than 3x1023 cm-3 and temperature of more than 5 keV though this density is much larger than that simulated by Ditmire et al. [Phys. Rev. A 53 (1996) 3379]. The X-ray intensity depends on the life-time of the inner-shell excited states