[en] A review of the activities of the GOL-3 programme is presented. The first group of results concern the experiments on uniform plasma heating by a 100 kJ electron beam. Heating of the bulk plasma electrons up to 1 keV at 10¹⁵ cm^-3 density is achieved. The second group of experiments deal with 'two stage' dense plasma heating. Hydrogen clouds of 10¹⁶ -10¹⁷ cm^-3 density and 0.5-3 m length are produced by gas puffing. The energy delivered by the electron beam to the 10¹⁵ cm^-3 background plasma occupying the rest of the device is then effectively transferred to these clouds, giving rise to the formation of a hot dense plasma. (author). 3 refs, 3 figs

[en] The review of activity on the GOL-3 program is presented. The first part of the results is concerned with the experiments on the uniform plasma heating by a 100 kJ E-beam. Heating of the bulk plasma electrons up to 1 keV at 10¹⁵ cm^-3 density is achieved. The second group of experiments deals with so-called open-quotes two-stageclose quotes dense plasma heating. The 10¹⁶-10¹⁷ cm^-3 hydrogen bunches of 0.5-3 m length are produced by gas-puffing. High efficiency of the conversion of the energy, delivered by E-beam to 10¹⁵ cm^-3 background plasma occupying the rest of the device, to the dense plasma bunches, is demonstrated. Last part of the paper describes activity on the microsecond ribbon E-beam of 4x140 cm² cross section and of 200 kJ energy content on the U-2 generator. The transportation of such a beam at 2 m distance in a slit vacuum channel and its shape transformation to a circular one is achieved

[en] The experimental results on heating of a dense plasma by an electron beam on the GOL-3 device are presented. The relativistic electron beam is injected into a 7-meter long plasma column of a mirror machine. The beam can transfer about 20-30% of its energy into 1-10 keV plasma electrons due to collective effects. These electrons are slowed down in a 0.5-3 meter long gas cloud of a 10¹⁶-10¹⁷cm^-3 density (so-called two-stage heating scheme). The hot electrons ionize this cloud and heat the dense plasma due to binary collisions. The total energy deposited in the cloud is 2-4 times higher than the instantaneous energy content of the lower density homogeneous plasma. Pressure waves were observed in the plasma. The mean energy of the hot electrons was estimated from measured energy deposition along the plasma cloud. The experiment demonstrates a high efficiency of the two-stage scheme of a dense (10¹⁶-10¹⁷ cm^-3) plasma heating