Microwave and plasma interaction in a rectangular waveguide: Effect of ponderomotive force

Journal Article · Thu Jul 15 04:00:00 EDT 2010 · Journal of Applied Physics

DOI:https://doi.org/10.1063/1.3452335· OSTI ID:21476337

Malik, Hitendra K; Aria, Anil K ^[1]

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1. Department of Physics, Plasma Waves and Particle Acceleration Laboratory, Indian Institute of Technology Delhi, New Delhi 110 016 (India)

Studies on the propagation of high power microwave and its interaction with a plasma in a metallic waveguide are carried out. For this we consider the fundamental TE{sub 10} mode that propagates in an evacuated rectangular waveguide and encounters a plasma which is filled in another waveguide of the same size. Using Maxwell's equations we evaluate the field components of the mode in the evacuated waveguide and then obtain coupled differential equations for the field components of the mode in the plasma filled waveguide, where the plasma effect enters in terms of its dielectric constant. These equations are solved numerically using the fourth-order Runge-Kutta method for the electric field amplitude of the microwave and its wavelength under the effect of plasma density, waveguide width, and microwave frequency. All the investigations are carried out for different initial plasma density profiles, namely homogeneous density, linear density with gradient in the propagation direction and the density with Gaussian profile along the waveguide width. The structure of the perturbed density due to the ponderomotive force exerted by the mode is also investigated under the effect of microwave parameters and waveguide width. Numerical studies are conducted for the isothermal plasma in the waveguide.

• OSTI ID: 21476337
• Journal Information: Journal of Applied Physics, Journal Name: Journal of Applied Physics Journal Issue: 1 Vol. 108; ISSN JAPIAU; ISSN 0021-8979
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
AMPLITUDES
CALCULATION METHODS
DIELECTRIC PROPERTIES
DIFFERENTIAL EQUATIONS
ELECTRIC FIELDS
ELECTRICAL PROPERTIES
ELECTROMAGNETIC RADIATION
EQUATIONS
ITERATIVE METHODS
MATHEMATICAL SOLUTIONS
MATHEMATICS
MAXWELL EQUATIONS
MICROWAVE RADIATION
NUMERICAL ANALYSIS
NUMERICAL SOLUTION
PARTIAL DIFFERENTIAL EQUATIONS
PERMITTIVITY
PHYSICAL PROPERTIES
PLASMA
PLASMA DENSITY
PLASMA RADIAL PROFILES
PONDEROMOTIVE FORCE
RADIATIONS
RUNGE-KUTTA METHOD
WAVE PROPAGATION
WAVEGUIDES
WAVELENGTHS