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Effect of a large-amplitude circularly polarized wave on linear beam-plasma electromagnetic instabilities
(Blackwell Publishing Ltd, 2003)
In a previous paper, sufficiently large-amplitude and left-handed ‘‘pump waves’’
propagating parallel to the background magnetic field were shown to stabilize a
moderately dense beam in a proton plasma against the ...
Linear kinetic waves in plasmas described by Kappa Distributions
(Elsevier, 2017)
In this chapter we present an overview of the excitation, propagation, and
absorption of linear plasma waves in collisionless, spatially uniform, multicomponent,
magnetized non-Maxwellian plasma characterized by a ...
Self-excited primary and secondary instability of laminar separation bubbles
(2020-01-01)
The self-excited instabilities acting on laminar separation bubbles in the absence of external forcing are studied by means of linear stability analysis and direct numerical simulation. Previous studies demonstrated the ...
Electrostatic instabilities induced by large-amplitude left-hand polarized waves
(Blackwell Publishing Ltd, 2004)
We study the effect of a large-amplitude left-hand polarized wave on ion acoustic instabilities. We show that the presence of a finite amplitude left-hand polarized wave produces electrostatic instabilities above a threshold ...
Modulation instability in waveguides with an arbitrary frequency-dependent nonlinear coefficient
(Optical Society of America, 2020-05)
In this Letter, we present, for the first time, to the best of our knowledge, the modulation instability (MI) gain spectrum of waveguides with an arbitrary frequency-dependent nonlinear coefficient ensuring strict energy ...
Frequency-selection mechanism in incompressible open-cavity flows via reflected instability waves
(American Physical Society, 2015-01)
We present an alternative perspective on nonharmonic mode coexistence, commonly found in the shear layer spectrum of open-cavity flows. Modes obtained by a local linear stability analysis of perturbations to a two-dimensional, ...
Measurement of the dispersion relation of a convectively unstable capillary jet under confinement
(Amer. Inst. Physics, 2015)
The dispersion relation of a confined capillary jet with negligible inertia is measured by Fourier
analysis of the jet radius. The real part of the dispersion relation, obtained through the
spatiotemporal Fourier spectrum, ...
Stabilization of linear ion beam right-hand polarized instabilities by nonlinear Alfvén/ion-cyclotron waves
(Blackwell Publishing Ltd, 2003)
It is shown that ion-beam plasma electromagnetic right-hand polarized instabilities can be stabilized by nonlinear left-hand polarized waves. This phenomenon constitutes a nonlinear saturation mechanism for right-hand ...
Ion cyclotron instability due to the thermal anisotropy of drifting ion species
(Blackwell Publishing Ltd, 2003)
In a recent study of ion cyclotron waves generated by the thermal anisotropy of oxygen ions, it was shown that the heavy ion drift velocity and a large thermal anisotropy of the heavy ions can destabilize proton-cyclotron ...
Kelvin-Helmholtz versus Hall magneto-shear instability in astrophysical flows
(American Physical Society, 2014-05)
We study the stability of shear flows in a fully ionized plasma. Kelvin-Helmholtz is a well-known macroscopic and ideal shear-driven instability. In sufficiently low-density plasmas, also the microscopic Hall magnetoshear ...