Accession Number:

AD0645747

Title:

NON-LINEAR COUPLING BETWEEN SLOW AND FAST WAVES IN A WAVE-GUIDE PARTIALLY FILLED WITH A PLASMA,

Descriptive Note:

Corporate Author:

ROYAL INST OF TECH STOCKHOLM (SWEDEN) MICROWAVE DEPT

Personal Author(s):

• Hedvall,P.

Report Date:

1966-12-01

Pagination or Media Count:

30.0

Abstract:

The non-linear coupling between different modes in a parallel plate wave-guide, partially filled with a cold and homogeneous plasma slab, is studied. The types of non-linearities considered are those arising in the equation of motion for the electrons and from the ac charges on the plasma boundaries. It is shown that, by means of a slow or fast pump wave, one slow primary wave can non-linearly excite another fast wave, which in contrast to the slow primary wave will have a considerable amount of field energy outside the plasma, and may thus be easily picked up by conventional couplers. Numerical calculations of the coupling coefficient are presented, and it is concluded that non-linear coupling in this way, at least for very slow primary waves, can provide a mean of getting an improved coupling to the slow plasma waves. Author

Descriptors:

• *COUPLING CIRCUITS
• WAVEGUIDES
• PLASMAS(PHYSICS)
• NONLINEAR SYSTEMS
• PUMPING(ELECTRONICS)
• EXCITATION
• PROPAGATION

Subject Categories:

• Electrical and Electronic Equipment

Distribution Statement:

APPROVED FOR PUBLIC RELEASE