scholarly journals Parametric excitation of ion Bernstein waves by a fast wave antenna in the ion cyclotron frequency range

1983 ◽  
Author(s):  
F. Skiff ◽  
M. Ono ◽  
K.L. Wong
Keyword(s):  
Parametric Excitation ◽  
Cyclotron Frequency ◽  
Fast Wave ◽  
Frequency Range ◽  
Wave Antenna ◽  
Ion Cyclotron ◽  
Bernstein Waves

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

Simulation of fast wave current drive in tokamaks in the ion cyclotron frequency range

2002 ◽  
Vol 42 (9) ◽  
pp. 1085-1093 ◽  
Author(s):  
R. Bilato ◽  
M. Brambilla ◽  
I. Pavlenko ◽  
F. Meo
Keyword(s):  
Cyclotron Frequency ◽  
Current Drive ◽  
Fast Wave ◽  
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.

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