X-ray spectra from laser targets in experiments on the SOKOL-P facility

X-ray spectra from targets irradiated by picosecond laser pulses with intensities of 3 × 10¹⁷-10¹⁸ W/cm² have been studied experimentally on the SOKOL-P facility. Both massive metal targets and multilayer targets with a buried emitting layer have been examined. The measurement results are interpreted by using numerical simulations and theoretical analysis. Experimental data on the X-ray continuum in the photon energy range of 0.8–6 keV and the line spectra of hydrogen-and helium-like aluminum ions are found to agree satis-factorily with numerical results.