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Upper hybrid resonance absorption and scattering from a plasma column

Citation

Ault, Richard Harold (1971) Upper hybrid resonance absorption and scattering from a plasma column. Dissertation (Ph.D.), California Institute of Technology. doi:10.7907/RZ3S-9A43. https://resolver.caltech.edu/CaltechTHESIS:08062014-093858373

Abstract

The electromagnetic scattering and absorption properties of small (kr~1/2) inhomogeneous magnetoplasma columns are calculated via the full set of Maxwell's equations with tensor dielectric constitutive relation. The cold plasma model with collisional damping is used to describe the column. The equations are solved numerically, subject to boundary conditions appropriate to an infinite parallel strip line and to an incident plane wave. The results are similar for several density profiles and exhibit semiquantitative agreement with measurements in waveguide. The absorption is spatially limited, especially for small collision frequency, to a narrow hybrid resonant layer and is essentially zero when there is no hybrid layer in the column. The reflection is also enhanced when the hybrid layer is present, but the value of the reflection coefficient is strongly modified by the presence of the glass tube. The nature of the solutions and an extensive discussion of the conditions under which the cold collisional model should yield valid results is presented.

Item Type:Thesis (Dissertation (Ph.D.))
Subject Keywords:Physics, hybrid, absorption, plasma
Degree Grantor:California Institute of Technology
Division:Physics, Mathematics and Astronomy
Major Option:Physics
Thesis Availability:Public (worldwide access)
Research Advisor(s):
  • Gould, Roy Walter
Thesis Committee:
  • Unknown, Unknown
Defense Date:12 March 1971
Record Number:CaltechTHESIS:08062014-093858373
Persistent URL:https://resolver.caltech.edu/CaltechTHESIS:08062014-093858373
DOI:10.7907/RZ3S-9A43
Default Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:8628
Collection:CaltechTHESIS
Deposited By: Dan Anguka
Deposited On:06 Aug 2014 16:49
Last Modified:20 Dec 2019 19:57

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