Radiation Field and Q of a Resonant Cylindrical Plasma Column
- 1 June 1961
- journal article
- conference paper
- Published by AIP Publishing in Physics of Fluids
- Vol. 4 (6) , 740-742
- https://doi.org/10.1063/1.1706391
Abstract
A cylindrical plasma column displays a series of resonant responses when it is excited by an electromagnetic wave with its electric field and direction of propagation both perpendicular to the axis of the column. In the principal member of the mode spectrum, the electrons are taken to move in phase in a direction transverse to the axis of the column. The diameter of the column is small compared to wavelength. In this paper, for the transverse electronic motion described, an expression for the vector potential in the region about the column is derived and thence the electromagnetic field components. The radiation field components Eφ and Hz vary as ρ−½. The effect of radiation damping is calculated by deriving an expression for the selectivity factor Q. The expression is Q = (λ/a)2/2π3, when the radius a is much less than a wavelength.Keywords
This publication has 1 reference indexed in Scilit:
- Absorption and Reflection Spectrum of a PlasmaJournal of Applied Physics, 1960