Localized electrostatic excitations in a Thomas-Fermi plasma containing degenerate electrons

• By using the Thomas-Fermi electron density distribution for quantum degenerate electrons, the hydrodynamic equations for ions, and the Poisson equation, planar and nonplanar ion-acoustic solitary waves in an unmagnetized collisionless plasma are investigated. The reductive perturbation method is used to derive cylindrical and spherical Korteweg-de Vries equations. Numerical solutions of the latter are presented. The present results can be useful in understanding the features of small but finite amplitude localized ion-acoustic solitary pulses in a degenerate plasma.

Ämnesord

NATURVETENSKAP  -- Fysik -- Fusion, plasma och rymdfysik (hsv//swe)

NATURAL SCIENCES  -- Physical Sciences -- Fusion, Plasma and Space Physics (hsv//eng)

Nyckelord

ion-acoustic-waves

warm multicomponent plasma

solitary waves

dusty plasmas

double-layers

solitons

amplitude

temperature

propagation

beam

Publikations- och innehållstyp

ref (ämneskategori)

art (ämneskategori)