Turbulent Heating Experiments in a Plasma Betatron

The various experiments carried out with the University of Saskatchewan plasma betatron are reviewed. The apparatus, having a major/minor radius of 19 cm/3 cm, a toroidal magnetic field BΦ ⩽ 0.4 T and a heating field EΦ ⩽ 12 kV/m, has been operated in different modes - designated as betatron, tokamak and reversed - B⊥. The characteristics of the turbulently heated plasma and the physical processes occurring in each mode are discussed.