Current drive, anticurrent drive, and balanced injection
In lower hybrid (LH) discharges, the number of suprathermal electrons is limited by the upper bound on the current density from the q = 1 condition, which is caused by the onset of the m = 1 MHD instability. The stored energy of suprathermal electrons, measured in terms of a poloidal beta, scales with plasma current as I/sub p//sup -1/. Potentially, these bounds represent very restrictive conditions for heating in larger machines. Consequently, it seems necessary to perform experiments where the electrons are driven in both directions, parallel and antiparallel to the magnetic field, i.e., bidirectional scenarios like anticurrent drive or balanced injection. Data from PLT relevant to these ideas are discussed. 6 refs., 4 figs.
- Research Organization:
- Princeton Plasma Physics Lab. (PPPL), Princeton, NJ (United States)
- DOE Contract Number:
- AC02-76CH03073
- OSTI ID:
- 5702583
- Report Number(s):
- PPPL-2462; ON: DE88003470
- Resource Relation:
- Other Information: Portions of this document are illegible in microfiche products. Original copy available until stock is exhausted
- Country of Publication:
- United States
- Language:
- English
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CURRENT DENSITY
LIMITING VALUES
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ELECTRONS
EXPERIMENTAL DATA
GRAD-SHAFRANOV EQUATION
HARD X RADIATION
MAGNETIC FIELDS
MHD EQUILIBRIUM
PLASMA INSTABILITY
PLASMA SIMULATION
RF SYSTEMS
DATA
DIFFERENTIAL EQUATIONS
ELECTROMAGNETIC RADIATION
ELEMENTARY PARTICLES
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FERMIONS
HEATING
HIGH-FREQUENCY HEATING
INFORMATION
INSTABILITY
IONIZING RADIATIONS
LEPTONS
NUMERICAL DATA
PARTIAL DIFFERENTIAL EQUATIONS
PLASMA HEATING
RADIATIONS
SIMULATION
THERMONUCLEAR REACTORS
TOKAMAK TYPE REACTORS
X RADIATION
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