Relativistic electron beam neutralization in a dense magnetized plasma
Journal
Physics of Fluids
Journal Volume
16
Journal Issue
9
Pages
1472-1479
Date Issued
1973
Author(s)
Rostoker, N.
Abstract
For the case of a longitudinal magnetic guide field this problem has been treated neglecting ion dynamics [R. Lee and R. N. Sudan, Phys. Fluids 14, 1213 (1971)]. Under the assumptions Ωe ≫ ωpe, Ω ≫ ωpi, where up, Ω are plasma and gyrofrequencies, there is no neutralization because both elections and ions are tied to field lines. When Ωe ≫ ωpe and Ωi < ωpi, it is essential to consider ion dynamics since the ions play the dominant role in neutralization. In the final state, the beam is essentially neutralized both electrically and magnetically and the energy associated with plasma oscillations is a small fraction of the beam energy except when the radius of the beam is small compared with the plasma skin depth.
SDGs
Type
journal article