
TY  - JOUR
A1  - Hugrass, WN 
T1  - The Existence of Non-unique Steady State Solutions to the RMF Current Drive Equations
JF  - Australian Journal of Physics
JO  - Aust. J.  Phys.
Y1  - 1985
VL  - 38
IS  - 2
SP  - 157
EP  - 170
KW  - 
UR  - https://doi.org/10.1071/PH850157 
N2  - It is shown that the value of the d.c. current driven in a plasma cylinder by means of a rotating magnetic field (RMF) is not unique for R/o ;;:; 6 and eB",/vel m ~ R/o, where R is the radius of the plasma cylinder, a is the classical skin depth, Vel is the electron-ion momentum transfer collision frequency, B", is the magnitude of the rotating magnetic field, e is the electron charge and m is the electron mass. This effect is predicted using three distinct approaches: (i) a steady state analysis which ignores the second and higher harmonics of the fields and currents; (ii) a qualitative model which utilizes the analogy between the RMF current drive technique and the operation of the induction motor; (iii) a solution of the initial boundary value equations describing the RMF current drive in cylindrical plasmas. 
ER  -

