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- W1978453791 abstract "It is shown that in fusion plasma configurations sustained by electrode helicity injection, the core electron temperature (in electron volts) can, at most, be 25% to 40% of the electrode voltage (in volts). This result is obtained by assessing magnetic helicity injection as a driver of macroscopic steady-state plasma currents in magnetic confinement devices. Coaxial helicity injection using electrodes (CHI) and oscillating-field current drive (OFCD) are compared to inductive current drive. Magnetic helicity, K, is uniquely defined as the time-dependent volume integral of A⋅B when the surface components of A are purely solenoidal. Using an Ohm’s law including Hall terms, magnetic helicity transport modeling shows that no closed magnetic surfaces with time and volume averaged parallel currents can exist continuously within a plasma sustained only by CHI or OFCD. The 25% to 40% limitations are obtained by considering long and short electron mean-free-path models of parallel energy transport." @default.
- W1978453791 created "2016-06-24" @default.
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- W1978453791 date "2001-11-01" @default.
- W1978453791 modified "2023-10-16" @default.
- W1978453791 title "Transport implications of current drive by magnetic helicity injection" @default.
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- W1978453791 doi "https://doi.org/10.1063/1.1407285" @default.
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