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Approximate analytic theory of the multijunction grill

Technical Report:

Abstract

An approximate analytic theory of the general multijunction grill is developed. Omitting the evanescent modes in the subsidiary waveguides both at the junction and at the grill mouth and neglecting multiple wave reflection, simple formulae are derived for the reflection coefficient, the amplitudes of the incident and reflected waves and the spectral power density. These quantities are expressed through the basic grill parameters (the electric length of the structure and phase shift between adjacent waveguides) and two sets of reflection coefficients describing wave reflections in the subsidiary waveguides at the junction and at the plasma. Approximate expressions for these coefficients are also given. The results are compared with a numerical solution of two specific examples; they were shown to be useful for the optimization and design of multijunction grills.For the JET structure it is shown that, in the case of a dense plasma,many results can be obtained from the simple formulae for a two-waveguide multijunction grill. (author) 12 figs., 12 refs.
Publication Date:
Mar 01, 1991
Product Type:
Technical Report
Report Number:
IPPCZ-309
Reference Number:
SCA: 700350; PA: AIX-23:006547; SN: 91000616424
Resource Relation:
Other Information: PBD: Mar 1991
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; JET TOKAMAK; LOWER HYBRID CURRENT DRIVE; AMPLITUDES; ANALYTICAL SOLUTION; ANTENNAS; ELECTROMAGNETIC FIELDS; LOWER HYBRID HEATING; MICROWAVE SPECTRA; REFLECTION; WAVE PROPAGATION; WAVEGUIDES; 700350; PLASMA PRODUCTION, HEATING, CURRENT DRIVE, AND INTERACTIONS
OSTI ID:
10102659
Research Organizations:
Ceskoslovenska Akademie Ved, Prague (Czech Republic). Ustav Fyziky Plazmatu
Country of Origin:
Serbia and Montenegro
Language:
English
Other Identifying Numbers:
Other: ON: DE92612379; TRN: CS9123077006547
Availability:
OSTI; NTIS (US Sales Only); INIS
Submitting Site:
INIS
Size:
37 p.
Announcement Date:
Jun 30, 2005

Technical Report:

Citation Formats

Hurtak, O, and Preinhaelter, J. Approximate analytic theory of the multijunction grill. Serbia and Montenegro: N. p., 1991. Web.
Hurtak, O, & Preinhaelter, J. Approximate analytic theory of the multijunction grill. Serbia and Montenegro.
Hurtak, O, and Preinhaelter, J. 1991. "Approximate analytic theory of the multijunction grill." Serbia and Montenegro.
@misc{etde_10102659,
title = {Approximate analytic theory of the multijunction grill}
author = {Hurtak, O, and Preinhaelter, J}
abstractNote = {An approximate analytic theory of the general multijunction grill is developed. Omitting the evanescent modes in the subsidiary waveguides both at the junction and at the grill mouth and neglecting multiple wave reflection, simple formulae are derived for the reflection coefficient, the amplitudes of the incident and reflected waves and the spectral power density. These quantities are expressed through the basic grill parameters (the electric length of the structure and phase shift between adjacent waveguides) and two sets of reflection coefficients describing wave reflections in the subsidiary waveguides at the junction and at the plasma. Approximate expressions for these coefficients are also given. The results are compared with a numerical solution of two specific examples; they were shown to be useful for the optimization and design of multijunction grills.For the JET structure it is shown that, in the case of a dense plasma,many results can be obtained from the simple formulae for a two-waveguide multijunction grill. (author) 12 figs., 12 refs.}
place = {Serbia and Montenegro}
year = {1991}
month = {Mar}
}