X-ray diagnostics of almost transparent Fe plasma of inverted corona target

Measurements of spectral and energy X-ray characteristics of almost transpa rent Fe plasma produced by laser radiation inside the inverted-corona targe ts have been made at ISKRA-5 facility. The targets were spherical plastics cavities with 2-mm diameter and 4.6-mu m thickness covered from inside with Fe layer 0.25-mu m thickness. X-ray spectrum, X-ray total energy, and the energy of a HealphaFe resonance line have been measured. Experimental data and calculation results are collated.