TOROIDAL CURRENT DRIVE AND SUSTAINMENT BY LOWER HYBRID WAVES IN THE WT-2 TOKAMAK

Author(s):  
S. Tanaka ◽  
Y. Terumichi ◽  
T. Maekawa ◽  
M. Nakamura ◽  
T. Cho ◽  
...  
1981 ◽  
Vol 26 (2) ◽  
pp. 359-367 ◽  
Author(s):  
M. Y. Yu ◽  
P. K. Shukla ◽  
H. U. Rahman

Nonlinear excitation of electrostatic and magnetostatic zero-frequency modes by finite-amplitude lower-hybrid waves is considered. It is found that modulational instabilities can give rise to enhanced plasma vortices. Dispersion relations, as well as analytical expressions for the growth rates, are obtained. The enhanced vortices may cause anomalous cross-field diffusion which can affect plasma confinement in tokamak devices when lower-hybrid waves are used for plasma heating or current drive. We found that magnetic fluctuations associated with the parametrically driven magnetostatic mode are of particular importance in tokamak plasmas.


2017 ◽  
Vol 24 (3) ◽  
pp. 032502 ◽  
Author(s):  
Youlei Yang ◽  
Nong Xiang ◽  
Ye Min Hu

1989 ◽  
Author(s):  
M. Brusati ◽  
C. Gormezano ◽  
S. Knowlton ◽  
M. Lorentz-Gottardi( ◽  
F. Rimini

1989 ◽  
Vol 42 (1) ◽  
pp. 1-12
Author(s):  
Aldo Nocentini

The dependence of the efficiency of current drive by lower-hybrid waves on the shape and intensity of the wave spectrum is discussed in the case where no d.c. electric field is present. The discussion is based on a simple formula arising from a one-dimensional kinetic treatment of the problem.


1986 ◽  
Vol 29 (3) ◽  
pp. 599 ◽  
Author(s):  
Viktor K. Decyk ◽  
Hirotada Abe

1991 ◽  
Vol 31 (5) ◽  
pp. 827-837 ◽  
Author(s):  
V.S. Belikov ◽  
Ya.I. Kolesnichenko ◽  
I.S. Plotnik

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