ROENTGEN LASER PHOTO-PUMP SOURCE BASED ON X-PINCH

The use of high-aperture spectrograph with spherical mica crystall per mitted to register H- and He-like spectra of Al and Si with high spect ral (lambda/DELTAlambda approximately 3000) and spatial (approximately 30 mum) resolution both at the stage of maximal compression and of X- pinch plasma expansion. The electron temperature (up to 950 eV) and de nsity (up to 2.10(24) cm-3) are measured in the ''hot point'' together with the plasma parameters at the stage of plasma expansion. The ener gy evaluation showed that the energy of K-lines emission may reach up to 1 J (the power of 1 GW). Total energy of ''hot point'' emission for X-pinch plasma was about 1 kJ in the wavelength interval of 0.5 - 10 nm. So the X-pinch ''hot point'' emission may be an effective pump sou rce for active medium of roentgen laser, and recombining plasma expand ed from the hot area could itself serve as an active medium for shortw avelength lasers.