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Effects of Induced Acoustic Sources on the Impedance of a Cylindrical Dipole in a Warm Plasma
Author(s) -
Carlin J.,
Mittra R.
Publication year - 1967
Publication title -
radio science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.371
H-Index - 84
eISSN - 1944-799X
pISSN - 0048-6604
DOI - 10.1002/rds19672111327
Subject(s) - electrical impedance , acoustic impedance , dipole , acoustics , plasma , physics , mechanics , antenna (radio) , current (fluid) , materials science , thermodynamics , computer science , telecommunications , quantum mechanics
In determining the impedance of a cylindrical dipole in intimate contact with a plasma, the effect of the induced acoustic sources (force and fluid flux distributions) on the antenna surface must be accounted for in addition to the effects of the induced current distribution. This is accomplished by the derivation of a suitable stationary formula for impedance which accounts for the effects of all the induced sources. In this variational formulation it is only necessary to know the functional form of the induced sources and not their relative magnitudes in order to obtain impedance values. In general, the effect of the acoustic sources on impedance was found to be quite small for the current and force distribution used.