Open AccessTEMPORAL EVOLUTION OF THE LOWER HYBRID CAVITIES IN THE IONOSPHERE PLASMA DUE TO TURBULENT DIFFUSION
Author(s) -
N. A. Azarenkov,
Д.В. Чибисов,
N. I. Kovalenko,
D. I. Maslennikov
Publication year - 2019
Publication title -
problems of atomic science and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.216
H-Index - 17
eISSN - 1562-6016
pISSN - 1682-9344
DOI - 10.46813/2019-122-027
Subject(s) - plasma , physics , instability , plasma diffusion , diffusion , radius , turbulent diffusion , turbulence , diffusion equation , ionosphere , mechanics , computational physics , atomic physics , geophysics , quantum mechanics , computer security , economy , computer science , economics , service (business)
The problem of evolution and disappearance of the lower hybrid cavities that are observed in the plasma of the Earth’s ionosphere is solved. It is assumed that the destruction of the cavity is caused by turbulent diffusion of plasma, which arises due to the drift instability of radially inhomogeneous plasma. The initial plasma density distribution on the radius in the cavity is considered to be the inverse Gaussian distribution. A solution of the diffusion equation is obtained, which at any time determines the radial dependence of the plasma density in the cavity. In the asymptotic limit t →∞ the plasma density in the cavity becomes equal to the density of the surrounding plasma.