Edge localized magnetosonic eigenmodes in the ion cyclotron frequency range

2003 ◽  
Vol 10 (11) ◽  
pp. 4371-4377 ◽  
Author(s):  
T. Hellsten ◽  
M. Laxåback
Keyword(s):  
Cyclotron Frequency ◽  
Frequency Range ◽  
Ion Cyclotron

scholarly journals Novel internal measurements of ion cyclotron frequency range fast-ion driven modes

2021 ◽  
Author(s):  
Neal A Crocker ◽  
Shawn X Tang ◽  
Kathreen E Thome ◽  
Jeff Lestz ◽  
Elena Belova ◽  
...  
Keyword(s):  
Cyclotron Frequency ◽  
Harmonic Wave ◽  
Wave Number ◽  
Frequency Range ◽  
High Wave Number ◽  
Minor Radius ◽  
Ion Cyclotron ◽  
Cyclotron Emission ◽  
Edge Localized Modes ◽  
Fast Ion

Abstract Novel internal measurements and analysis of ion cyclotron frequency range fast-ion driven modes in DIII-D are presented. Observations, including internal density fluctuation (ñ) measurements obtained via Doppler Backscattering, are presented for modes at low harmonics of the ion cyclotron frequency localized in the edge. The measurements indicate that these waves, identified as coherent Ion Cyclotron Emission (ICE), have high wave number, _⊥ρ_fast ≳ 1, consistent with the cyclotron harmonic wave branch of the magnetoacoustic cyclotron instability (MCI), or electrostatic instability mechanisms. Measurements show extended spatial structure (at least ~ 1/6 the minor radius). These edge ICE modes undergo amplitude modulation correlated with edge localized modes (ELM) that is qualitatively consistent with expectations for ELM-induced fast-ion transport.

scholarly journals Parametric decay in the edge plasma of ASDEX during fast wave heating in the ion cyclotron frequency range

1988 ◽  
Vol 28 (9) ◽  
pp. 1603-1609 ◽  
Author(s):  
R. Van Nieuwenhove ◽  
G. Van Oost ◽  
J.-M. Noterdaeme ◽  
M. Brambilla ◽  
J. Gernhardt ◽  
...  
Keyword(s):  
Cyclotron Frequency ◽  
Edge Plasma ◽  
Fast Wave ◽  
Frequency Range ◽  
Parametric Decay ◽  
Wave Heating ◽  
Ion Cyclotron

scholarly journals Solar Wind Electric Fields in the Ion Cyclotron Frequency Range

2006 ◽  
Vol 645 (1) ◽  
pp. 704-710 ◽  
Author(s):  
P. J. Kellogg ◽  
S. D. Bale ◽  
F. S. Mozer ◽  
T. S. Horbury ◽  
H. Reme
Keyword(s):  
Solar Wind ◽  
Electric Fields ◽  
Cyclotron Frequency ◽  
Frequency Range ◽  
Ion Cyclotron

Ion flow driven by waves in the ion cyclotron frequency range

2000 ◽  
Vol 7 (2) ◽  
pp. 564-570 ◽  
Author(s):  
Harold Weitzner ◽  
Lee A. Berry ◽  
E. Fred Jaeger ◽  
Donald B. Batchelor
Keyword(s):  
Cyclotron Frequency ◽  
Frequency Range ◽  
Ion Flow ◽  
Ion Cyclotron

Ponderomotive effects in the ion cyclotron frequency range

1996 ◽  
Vol T63 ◽  
pp. 216-218 ◽  
Author(s):  
C Riccardi ◽  
M Salierno ◽  
D Xuantong ◽  
M Fontanesi
Keyword(s):  
Cyclotron Frequency ◽  
Frequency Range ◽  
Ion Cyclotron

scholarly journals Экспериментальное определение дисперсионного соотношения излучения плазмы на частотах ионного циклотронного резонанса и его гармоник в токамаке

2021 ◽  
Vol 47 (5) ◽  
pp. 3
Author(s):  
Л.Г. Аскинази ◽  
Г.И. Абдуллина ◽  
А.А. Белокуров ◽  
Н.А. Жубр ◽  
В.А. Корнев ◽  
...  
Keyword(s):  
Cyclotron Frequency ◽  
Spectral Lines ◽  
Tokamak Plasma ◽  
Ion Cyclotron Resonance ◽  
Frequency Range ◽  
Beam Injection ◽  
Fast Ions ◽  
Ion Cyclotron ◽  
Heating Mode ◽  
The Magnetic Field

The study of the spectral properties of the electromagnetic radiation in the ion cyclotron frequency range from the TUMAN-3M tokamak plasma in the neutral beam injection (NBI) heating mode has been performed. The spectrum of this emission consists of several (up to four) narrow lines corresponding to different harmonics of the ion cyclotron resonance of the injected fast ions in the center of the plasma. Wave vectors corresponding to individual spectral lines are determined from the delays of signals from spatially separated probes. It is shown that under the assumption that the measured frequencies and wave vectors are described by a common dispersion relation, the observed emission can be explained by the appearance in the plasma an unstable fast magnetosonic wave propagating almost normally to the magnetic field.

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