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Schemes of microwave heating of overdense plasmas in the stellarator TJ-K

Microwave heating of overdense low-temperature plasmas, whose density exceeds the cutoff density of the injected microwave, is described for the stellarator TJ-K. Three different methods featuring each of their own characteristics are briefly presented. It is shown that TJ-K allows both fusion relevant scenarios such as heating by electron Bernstein waves and fundamental wave-plasma interactions like parametric decay instabilities to be investigated.