Theory of Fluid Instabilities in Partially Ionized Plasmas: An Overview
نویسندگان
چکیده
Partially ionized plasmas (PIP) are essential constituents of many astrophysical environments, including the solar atmosphere, interstellar medium, molecular clouds, accretion disks, planet ionospheres, cometary tails, etc., where ionization degree may vary from very weak to almost full ionization. The dynamics PIP is heavily affected by interactions between various charged and neutral species that compose plasma. It has been shown partial effects influence triggering development fluid instabilities as, e.g., Kelvin-Helmholtz, Rayleigh-Taylor, thermal, magneto-rotational instabilities, among others. Here we review theory some classic present in highlight unique introduced main emphasis put on partially atmospheric plasma, although other applications also mentioned. We focus mathematical theoretical investigation onset exponential growth instabilities. Results nonlinear evolution obtained numerical simulations discussed.
منابع مشابه
Quantum Molecular Dynamics of Partially Ionized Plasmas
We study a partially ionized hydrogen plasma by means of quantum molecular dynamics, which is based on wave packets. We introduce a new model which distinguishes between free and bound electrons. The free electrons are modelled as Gaussian wave packets with fixed width. For the bound states the 1s-wave function of the hydrogen atom is assumed. In our simulations we obtain thermodynamic properti...
متن کاملHall magnetohydrodynamics of partially ionized plasmas
The Hall effect arises in a plasma when electrons are able to drift with the magnetic field but ions cannot. In a fully-ionized plasma this occurs for frequencies between the ion and electron cyclotron frequencies because of the larger ion inertia. Typically this frequency range lies well above the frequencies of interest (such as the dynamical frequency of the system under consideration) and c...
متن کاملMulticomponent Transport Algorithms for Partially Ionized Plasmas
We investigate iterative methods for solving transport linear systems of partially ionized plasmas. We consider the situations of weak and strong magnetic fields as well as nonequilibrium and the linear systems are investigated in their natural constrained singular symmetric form. Stationary iterative techniques are considered with a new more singular formulation of the transport linear systems...
متن کاملA hierarchy of diffusion models for partially ionized plasmas
Partially ionized plasmas corresponding to different ionization degrees are derived and connected one with each other by the diffusion approximation methodology. These plasmas are the following electrical discharges: a thermal arc discharge, glow discharges in local thermodynamic equilibrium -LTEand in non-LTE, and a non-LTE glow discharge interacting with an electron beam (or flow).
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Frontiers in Astronomy and Space Sciences
سال: 2022
ISSN: ['2296-987X']
DOI: https://doi.org/10.3389/fspas.2022.789083