scholarly journals Quasilinear theory of the ordinary-mode electron-cyclotron resonance in plasmas

1983 ◽  
Author(s):  
V. Arunasalam ◽  
P.C. Efthimion ◽  
J.C. Hosea ◽  
H. Hsuan ◽  
G. Taylor
Keyword(s):  
Cyclotron Resonance ◽  
Electron Cyclotron Resonance ◽  
Electron Cyclotron ◽  
Quasilinear Theory ◽  
Ordinary Mode

scholarly journals Quasilinear theory of the ordinary-mode electron-cyclotron resonance in plasmas

1988 ◽  
Vol 37 (6) ◽  
pp. 2063-2069 ◽  
Author(s):  
V. Arunasalam ◽  
P. C. Efthimion ◽  
J. C. Hosea ◽  
H. Hsuan ◽  
G. Taylor
Keyword(s):  
Cyclotron Resonance ◽  
Electron Cyclotron Resonance ◽  
Electron Cyclotron ◽  
Quasilinear Theory ◽  
Ordinary Mode

Weakly relativistic nonlinear orbit dynamics for intense ordinary-mode propagation near electron cyclotron resonance

1989 ◽  
Vol 41 (3) ◽  
pp. 405-426 ◽  
Author(s):  
Ronald C. Davidson ◽  
Tser-Yuan Yang ◽  
Richard E. Aamodt
Keyword(s):  
Cyclotron Resonance ◽  
Electron Cyclotron Resonance ◽  
Relativistic Effects ◽  
Zero Solution ◽  
Electron Cyclotron ◽  
Nonlinear Frequency ◽  
Dynamical Equations ◽  
Ordinary Mode ◽  
Slow Evolution ◽  
Nonlinear Frequency Shift

The nonlinear orbit equations are investigated analytically and numerically for a constant-amplitude electromagnetic wave (ωs, ks) with ordinary-mode polarization propagating perpendicular to a uniform magnetic field B0 êz. Relativisitic electron dynamics are essential in determining the maximum orbit excursion when the incident wave frequency ωs is near the nth harmonic of the electron cyclotron frequency Ωc. Coupled nonlinear equations are obtained for the slow evolution of the amplitude A(т) and phase ø(t) of the perpendicular orbit when ωs ≈ nΩc. The dynamical equations are reduced to quadrature and simplified analytically. At exact resonance (ωs = nΩc), if relativistic effects are (incorrectly) neglected, the maximum orbit excursion Amax approaches the unacceptably large value determined from the first (non-zero) solution to Jn(ns ΩsAmax) = 0, which totally invalidates the non-relativistic approximation. (Here ns Ωs = cks/Ωc.) As a contrasting illustrative example, for n = 1, ωs = Ωc and moderate pump strength, weak relativistic effects limit the maximum orbit excursion to the approximate value , where єs = ns ωs (Vz/c) Vq/c ≪ 1, and Vq is the axial quiver velocity in the applied oscillatory field. Physically, relativistic effects produce a nonlinear frequency shift that dynamically ‘detunes’ the particle motion from exact cyclotron resonance, thereby limiting amplitude growth.

Anisotropic electron cyclotron resonance etching of tungsten films on GaAs

1994 ◽  
Vol 30 (1) ◽  
pp. 84-85 ◽  
Author(s):  
R.J. Shul ◽  
D.J. Rieger ◽  
C. Constantine ◽  
A.G. Baca ◽  
C. Barratt
Keyword(s):  
Cyclotron Resonance ◽  
Electron Cyclotron Resonance ◽  
Electron Cyclotron
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