scholarly journals Nonlinear evolution of lower hybrid waves

1979 ◽  
Vol 22 (5) ◽  
pp. 940 ◽  
Author(s):  
Charles F. F. Karney ◽  
Abhijit Sen ◽  
Flora Y. F. Chu
1978 ◽  
Vol 20 (2) ◽  
pp. 189-203 ◽  
Author(s):  
M. Y. Yu ◽  
P. K. Shukla ◽  
K. H. Spatschek

We investigate the problem of spatial depletion of propagating lower-hybrid waves in an inhomogeneous plasma. In particular, we consider the nonlinear evolution of a lower-hybrid pump which is coupled to a daughter lower-hybrid decay wave excited by low-frequency density perturbations. Our results show that pump depletion occurs when three-dimensional effects are included. This phenomenon competes with the filamentation of the pump caused by self- interaction. Implications to lower-hybrid heating experiments are discussed.


1978 ◽  
Author(s):  
C.F.F. Karney ◽  
A. Sen ◽  
F.Y.F. Chu

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.


2020 ◽  
Author(s):  
Binbin Tang ◽  
Wenya Li ◽  
Daniel Bruce Graham ◽  
Chi Wang ◽  
Yuri V. Khotyaintsev ◽  
...  

1986 ◽  
Vol 26 (8) ◽  
pp. 1106-1111 ◽  
Author(s):  
R. Bartiromo ◽  
M. Hesse ◽  
F.X. Söldner ◽  
R. Burhenn ◽  
G. Fussmann ◽  
...  

1979 ◽  
Vol 19 (8) ◽  
pp. 1073-1083 ◽  
Author(s):  
V.S. Chan ◽  
S.C. Chiu ◽  
G.E. Guest ◽  
R.W. Harvey ◽  
T. Ohkawa

2009 ◽  
Vol 16 (7) ◽  
pp. 072502 ◽  
Author(s):  
J. C. Wright ◽  
P. T. Bonoli ◽  
A. E. Schmidt ◽  
C. K. Phillips ◽  
E. J. Valeo ◽  
...  

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