Abstract

Emissions from certain resonance lines which are considered to be promising source candidates for matched-line photoexcitation pumping of plasma x-ray lasers have been measured and are found to be near the saturation level. This is supportive of current numerical modeling and laser experiments. The radiation is emitted from high density plasmas near the surface of laser-heated slab targets of selected materials. Among numerous possible ion combinations to be surveyed, a very promising test case involves Na⁹⁺ ions pumping Ne⁸⁺ ions for lasing at 23, 7.8 or 5.8 nm wavelengths. Spectra from frozen neon targets which include the Ne⁶⁺-Ne⁸⁺ ions will be presented.

© 1984 Optical Society of America