Imaging of laser-irradiated targets at a wavelength of 33.8 Å using a normal-incidence multilayer mirror

Abstract

The morphology of the 33.8 Å emission from laser-irradiated targets was studied using a concave mirror with a W/B4C multilayer coating. The mirror had peak normal-incidence reflectance of 1.8% at a wavelength of 33.8 Å. The emissions from a variety of targets were imaged on film with a spatial resolution of 30 μm in the target plane. Radiatively heated, low-density plastic and silica foams, x-ray laser targets, and a gas-filled enclosure were imaged. Several targets were simultaneously imaged at wavelengths of 33.8 and 130 Å using two normal-incidence microscopes.