Nonlinear Gravitoelectrostatic Sheath Fluctuation in Solar Plasma

Nonlinear Mhd Waves in the Solar Wind Plasma Structures

We investigate the interaction of magnetohydrody-namic waves with plasma density inhomogeneities. Our numerical study of the full MHD equations shows that: (A) Plasma density inhomogeneities are a source of non-linear generation of transverse com-pressive waves by a plane Alfvén wave, and substantially enhance (by about a factor of 2) the generation of the longitudinal compressive waves. (B) At...

Stability of the Plasma-sheath

KdV dynamics in the plasma-sheath transition

A mathematical model is formulated to catch the dynamics hidden in the plasma-sheath transition layer and the inner sheath layer for planar motion of a plasma. It is shown that the rescaled potential in the plasma-sheath transition layer and inner layer is governed by a perturbed KdV equation, through which some of the complex interactions and couplings among physical mechanisms acting in the p...

Kinetic fluctuation in the inhomogeneous plasma

Using the Langevin approach and the multiscale technique, a kinetic theory of the time and space nonlocal fluctuations in the collisional plasma is constructed. In local equilibrium a generalized version of the CallenWelton theorem is derived. It is shown that not only the dissipation but also the time and space derivatives of the dispersion determine the amplitude and the width of the spectrum...

Dynamic screening in solar plasma

In the hot, dense plasma of solar and stellar interiors, Coulomb potentials are screened, resulting in increased nuclear reaction rates. Although Salpeter’s approximation for static screening is widely accepted and used in stellar modeling, the question of screening in nuclear reactions has been revisited. In particular the issue of dynamic effects has been raised by Shaviv and Shaviv who apply...