Further note on the quasi-static theory of a cylindrical impedance probe for magnetoplasma

In a previous paper (Wait, 1966), an expression was derived for the fields of two parallel line charges in an anisotropic medium. A quasi-static theory was used, and to facilitate the analysis, the line sources were encased in a cylindrical dielectric rod. An important conclusion was that the resonant frequencies of the driving point impedance did not depend on the geometry of the device; at least, this was true to within a first order. This is in contrast to many other plasma diagnostic devices (Heald and Wharton,. 1965).