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Confinement of a plasma initiated and heated by electron cyclotron-resonance-frequency waves has been studied in the Heliotron-E. The observed plasma parameters were T₄=500-100 eV, T₈100 eV, n₄=410^12 cm^-3 at B=10 kG. The electron energy decay time was 408 msec and the particle confinement time was estimated to be more than 70 msec. These results offer a considerable improvement in energy confinement over Ohmically heated plasmas.
Iiyoshi et al. (1982) studied this question.