Search engine for discovering works of Art, research articles, and books related to Art and Culture
Javascript must be enabled to continue!
Kinetically modified parametric instabilities of circularly polarized Alfvén waves: Ion kinetic effects
View through CrossRef
Parametric instabilities of parallel propagating, circularly polarized, finite amplitude Alfvén waves in a uniform background plasma is studied, within a framework of one-dimensional Vlasov description for ions and massless electron fluid, so that kinetic perturbations in the longitudinal direction (ion Landau damping) are included. The present formulation also includes the Hall effect. The obtained results agree well with relevant analysis in the past, suggesting that kinetic effects in the longitudinal direction play essential roles in the parametric instabilities of Alfvén waves when the kinetic effects react “passively.” Furthermore, existence of the kinetic parametric instabilities is confirmed for the regime with small-wave-number daughter waves. Growth rates of these instabilities are sensitive to ion temperature. The formulation and results demonstrated here can be applied to Alfvén waves observed in the solar wind and in the earth’s foreshock region.
Title: Kinetically modified parametric instabilities of circularly polarized Alfvén waves: Ion kinetic effects
Description:
Parametric instabilities of parallel propagating, circularly polarized, finite amplitude Alfvén waves in a uniform background plasma is studied, within a framework of one-dimensional Vlasov description for ions and massless electron fluid, so that kinetic perturbations in the longitudinal direction (ion Landau damping) are included.
The present formulation also includes the Hall effect.
The obtained results agree well with relevant analysis in the past, suggesting that kinetic effects in the longitudinal direction play essential roles in the parametric instabilities of Alfvén waves when the kinetic effects react “passively.
” Furthermore, existence of the kinetic parametric instabilities is confirmed for the regime with small-wave-number daughter waves.
Growth rates of these instabilities are sensitive to ion temperature.
The formulation and results demonstrated here can be applied to Alfvén waves observed in the solar wind and in the earth’s foreshock region.
Related Results
Utra-thin single-layered high-efficiency focusing metasurface lens
Utra-thin single-layered high-efficiency focusing metasurface lens
For potential applications of metasurfaces in lens technologies, we propose a cross circularly polarized focusing metasurface which is capable of transforming a circularly polarize...
Basic physics of Alfvén instabilities driven by energetic particles in toroidally confined plasmas
Basic physics of Alfvén instabilities driven by energetic particles in toroidally confined plasmas
Superthermal energetic particles (EP) often drive shear Alfvén waves unstable in magnetically confined plasmas. These instabilities constitute a fascinating nonlinear system where ...
MMS Observations of Ion Cyclotron Waves in the Solar Wind
MMS Observations of Ion Cyclotron Waves in the Solar Wind
<p>Although electromagnetic ion cyclotron waves (ICWs) have been observed in the solar wind by multiple missions at heliocentric distances from 0.3 to 1 AU, there are...
The Research of Long-Optical-Path Visible Laser Polarization Characteristics in Smoke Environment
The Research of Long-Optical-Path Visible Laser Polarization Characteristics in Smoke Environment
The concentration of smoke in an environment can cause obvious interference to visible light intensity imaging, and it is a non-negligible factor in the polarized imaging of ground...
Bifunctional Electromagnetic Manipulation of Surface Waves Using Metasurfaces Under One Circularly Polarized Incidence
Bifunctional Electromagnetic Manipulation of Surface Waves Using Metasurfaces Under One Circularly Polarized Incidence
The ability to freely manipulate the wavefronts of surface plasmon polaritons (SPPs) or surface waves (SWs), particularly with multifunctional integration, is of great importance i...
Statistical Distribution of Magnetosonic Waves in the Martian Space
Statistical Distribution of Magnetosonic Waves in the Martian Space
Martian space is rich in plasma waves generated by plasma instabilities in both the solar wind and the Martian environment. These waves interact with charged particles through wave...
On nonlinear evolution of low-frequency Alfvén waves in weakly-expanding solar wind plasmas
On nonlinear evolution of low-frequency Alfvén waves in weakly-expanding solar wind plasmas
A multi-dimensional nonlinear evolution equation for Alfvén waves in weakly-expanding solar wind plasmas is derived by using the reductive perturbation method. The expansion of sol...
THE DYNAMICAL GENERATION OF CURRENT SHEETS IN ASTROPHYSICAL PLASMA TURBULENCE
THE DYNAMICAL GENERATION OF CURRENT SHEETS IN ASTROPHYSICAL PLASMA TURBULENCE
ABSTRACT
Turbulence profoundly affects particle transport and plasma heating in many astrophysical plasma environments, from galaxy clusters to the solar corona and ...