X-ray spectroscopic diagnostics of high-temperature dense plasmas created in different gaseous media

Summary form only given, as follows. The investigations of emission X-ray spectra of multicharged ions of some chemical elements (S, F, Ar, Fr, O) have been carried out. These atoms are contained in a gases and consequently can be used as diagnostic elements in a dense plasma focus experiments. Our investigations were done in the dense high-temperature plasma (N/sub e//spl sime/10/sup 21/ cm/sup -3/, T/sub e//spl ap/500 eV) created by laser heating of high-pressure gas puff targets, and X-ray spectrographs with a spherically bent mica crystals were used for spectra observations. Some new spectroscopic results (line identifications, high-precision wavelength measurements) have been obtained and have been applied to determine a spatial distribution of plasma parameters. It is shown that spectroscopic techniques used is a very suitable tool for studies of a plasma with complicated spatial structure.