Method for formation of quasi-monochromatic divergent X-ray fluxes from laser-produced plasmas

Abstract

Conditions and applicability limits of a new method for formation of quasi-monochromatic, with a large solid angle of divergence, linear X-ray fluxes from laser-produced plasmas are considered. The method is based on a special combination of laser target elements and -absorption filters, when the spectra of [H]- and [He]-like ions are excited in laser-produced plasma and -absorption filters select only the resonance lines of these ions from the linear spectrum. Experimental and theoretical studies have shown that, in the fluxes formed, the degree of monochromatisation may reach at the radiation contrast ratio of 5 – 10 and angular divergence of .