Alfvén wave excitation and single-pass ion cyclotron heating in a fast-flowing plasma

2006 ◽  
Vol 13 (5) ◽  
pp. 057103 ◽  
Author(s):  
Akira Ando ◽  
Masaaki Inutake ◽  
Motoi Hatanaka ◽  
Kunihiko Hattori ◽  
Hiroyuki Tobari ◽  
...  
Keyword(s):  
Alfven Wave ◽  
Wave Excitation ◽  
Single Pass ◽  
Ion Cyclotron ◽  
Flowing Plasma

Observations of single-pass ion cyclotron heating in a trans-sonic flowing plasma

2010 ◽  
Vol 17 (4) ◽  
pp. 043509 ◽  
Author(s):  
E. A. Bering ◽  
F. R. Chang Díaz ◽  
J. P. Squire ◽  
T. W. Glover ◽  
M. D. Carter ◽  
...  
Keyword(s):  
Single Pass ◽  
Ion Cyclotron ◽  
Flowing Plasma

Alfvén wave heating of a cylindrical plasma using axisymmetric waves. Part 2. Kinetic theory

1986 ◽  
Vol 35 (1) ◽  
pp. 75-106 ◽  
Author(s):  
I. J. Donnelly ◽  
B. E. Clancy ◽  
N. F. Cramer
Keyword(s):  
Kinetic Theory ◽  
Wave Equations ◽  
Compressional Wave ◽  
Alfven Wave ◽  
Larmor Radius ◽  
Electrostatic Wave ◽  
Hot Plasma ◽  
Wave Heating ◽  
Ion Cyclotron ◽  
Consequent Increase

Kinetic theory, including ion Larmor radius effects, is used to analyse the Alfvén wave heating of cylindrical plasmas using axisymmetric waves excited by an antenna at frequencies up to the ion cyclotron frequency. At the Alfvén resonance position, the compressional wave is mode converted to a quasi-electrostatic wave (QEW) which propagates towards the plasma centre or edge depending on whether the plasma is hot or warm. The energy absorbed by the plasma agrees with the MHD theory predictions provided the QEW is heavily damped before reaching the plasma centre or edge; if it is not, then QEW resonances may occur with a consequent increase in antenna resistance. The relation between ion cyclotron wave resonances and QEW resonances in a hot plasma is shown. The behaviour described above is demonstrated by numerical solution of the wave equations for small and large tokamak-like plasmas. WKB theory has been used to derive useful expressions which quantify the QEW behaviour.

Features of wave excitation of the electrostatic ion cyclotron type in the auroral ionosphere

2016 ◽  
Vol 54 (1) ◽  
pp. 52-60 ◽  
Author(s):  
A. A. Chernyshov ◽  
A. A. Ilyasov ◽  
M. M. Mogilevsky ◽  
I. V. Golovchanskaya ◽  
B. V. Kozelov
Keyword(s):  
Auroral Ionosphere ◽  
Wave Excitation ◽  
Ion Cyclotron

Single-pass ion cyclotron resonance absorption

2001 ◽  
Vol 8 (3) ◽  
pp. 907-915 ◽  
Author(s):  
Boris N. Breizman ◽  
Alexey V. Arefiev
Keyword(s):  
Cyclotron Resonance ◽  
Resonance Absorption ◽  
Ion Cyclotron Resonance ◽  
Single Pass ◽  
Ion Cyclotron

scholarly journals Reflection at the resonance layer of the fast Alfvén wave in ion cyclotron heating

1990 ◽  
Vol 2 (9) ◽  
pp. 2185-2190 ◽  
Author(s):  
C. Chow ◽  
V. Fuchs ◽  
A. Bers
Keyword(s):  
Alfven Wave ◽  
Ion Cyclotron

Alfven Wave Excitation in a Cavity with a Transverse Magnetic Field

1983 ◽  
Vol 38 (6) ◽  
pp. 616-624
Author(s):  
M. Bureš
Keyword(s):  
Magnetic Field ◽  
Transverse Magnetic ◽  
Alfven Wave ◽  
Wave Number ◽  
Mass Motion ◽  
Wave Excitation ◽  
Frequency Range ◽  
Poloidal Magnetic Field ◽  
Cavity Modes ◽  
Shear Alfven Waves

A transversely magnetized cylindrical plasma model with an internal rod conductor is used to approximate the FIVA internal ring device of Spherator type with a purely poloidal magnetic field. It is shown that an excitation asymmetry along the plasma column, i.e. with a wave number k2 ≠ 0, introduces a coupling between the magnetoacoustic and shear Alfven waves in the frequency range ω ≪ ωci. The introduction of an equilibrium mass motion along the plasma cylinder introduces a flow continuum. Simultaneously the Alfven resonance frequency becomes Doppler shifted. The experimental observations indicate that cavity modes do not build up in the FIVA device in the case of nonsymmetric excitation. If on the other hand the exciting structure becomes symmetric, i.e. with k2 = 0, the magnetoacoustic resonances become excited. The resulting Q values are rather low which indicates that the coupling to the shear wave through the Hall electric field cannot be neglected

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