High-power transmission in plasma-filled waveguides

Journal Article · Sun Aug 01 04:00:00 EDT 1976 · J. Appl. Phys.; (United States)

DOI:https://doi.org/10.1063/1.323183· OSTI ID:7266472

Chandra, P; Tripathi, V K

Using appropriate expressions for the nonlinear dielectric constant of a bounded fully ionized hot plasma, the propagation of high-power electromagnetic waves in the TE/sub 10/ mode in a plasma-filled rectangular waveguide has been investigated; the nonlinearity in this collisionless plasma arises from the ponderomotive force due to the gradient of the field intensity. After integrating the wave equation once, numerical solution has been carried out. As the power of the beam increases, the plasma is depleted from the center of the waveguide and concentrates near the walls. This allows the transmission of the beam in the waveguide even when the average plasma frequency is much larger than the wave frequency. At very high powers the field around the center of the waveguide possesses a cosine variation but falls very rapidly as the wall is approached. The field patterns in this case are seen to be similar to the linear case of a waveguide, partially filled with plasma. (AIP)

• Research Organization: Physics Department, Indian Institute of Technology, New Delhi 110029, India
• OSTI ID: 7266472
• Journal Information: J. Appl. Phys.; (United States), Journal Name: J. Appl. Phys.; (United States) Vol. 47:7; ISSN JAPIA
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
700108* -- Fusion Energy-- Plasma Research-- Wave Phenomena
COLLISIONLESS PLASMA
ELECTROMAGNETIC RADIATION
FLUIDS
GASES
HOT PLASMA
IONIZED GASES
MICROWAVE POWER TRANSMISSION
NUMERICAL SOLUTION
PLASMA
POWER TRANSMISSION
RADIATIONS
WAVE PROPAGATION
WAVEGUIDES