Progress on the Multimirror Trap GOL-3

Main results of researches on plasma heating and confinement of dense plasma in the multimirror trap GOL-3 are presented.

Recently magnetic system of the facility was converted into completely multimirror one. This results in further improvement of energy confinement time of plasma with ion temperature ~1 keV. Collective plasma heating by ~120 kJ (~8 s) relativistic electron beam results in T_e ~ 2 keV at ~10²¹ m^-3 density. High T_e exists for ~10 s. To this time T_i reaches ~2 keV. Ion temperature keeps at the high level during ~1 ms. The energy confinement time sufficiently increases and a value of n_E = (1.5 [divide] 3)10¹⁸ m^-3s.