Whistler wave propagation in field-aligned density duct plasma

Abstract

In this study, the physical structure for the propagation of whistler waves in ducts of nonuniform cold plasma density is investigated by means of electrodynamics theory. Expressions for the solution of the field equations are determined analytically using perturbation technique, and power transmitted by modes is evaluated in terms of a parabolic model for the plasma density distribution. The set of eigenmodes and their spatial structure are analyzed and the dependencies of the eigenmode propagation properties on the duct characteristics are studied.

Modulational instability of the interacting electron whistlers and magnetosonic perturbations

“…This unique behaviour resulted in the formation of isolated wave packets (Gaster & Grant 1975). Experiments also have revealed the capture of whistlers within ducts characterized by depleted plasma density, highlighting the interplay between wave propagation and plasma density variations (Nassiri 2008; Singh 2013). Moreover, the confinement of whistlers within magnetic tubes, characterized by localized regions of enhanced magnetic fields in a uniform plasma density environment, has been experimentally demonstrated (Gushchin et al 2005).…”