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Experimental data on neutron production in a plasma generated on a Be target by a picosecond laser of intensity 2 x 10{sup 18} W/cm{sup 2} are presented. In contrast to previous measurements, a Ta converter is not used in this study to generate {gamma} rays. The neutron yield is equal to 2 x 10{sup 3} over a solid angle of 4{pi} steradians per laser pulse. A simultaneous measurement of the maximum energy of hard x rays gave E{sub {gamma}}{sub max} {approx} 6 MeV, the number of these photons being 5 x 10{sup 8} over an angle of 4{pi} steradians per laser pulse. The energy distributions of fast electrons and photons are estimated theoretically.

Experimental data are reported on the generation of fast ions in a picosecond laser plasma at a laser-radiation intensity of 2 × 1018 W/cm2. The results are obtained by measuring the Doppler spectra of hydrogen-like fluorine ions. An important feature of the energy distribution of fast ions is a slow decrease up to an energy of 1.4 MeV. In addition, the directional motion of fast ions deep into a target is found due to the redshift of the Doppler profile of the Ly α line. The parameters of the energy distribution of the ions are theoretically estimated.

The C(Pi) M11 x-ray sensitive device is intended for recording the one-dimensional space distribution of x-radiation fluence in the spectral energy range from 0.2 to 40.0 keV and can be used as a part of x-ray spectrometers of different types instead of the photographic film and for measurement of spatial parameters of x-ray beams and oth.