The problem of the current distribution of a loop antenna in the form of an infinitesimally thin, perfectly conducting narrow strip coiled into a ring is considered. The antenna is located on the surface of an axially magnetized plasma column and is excited by a time-harmonic external EMF. The problem is reduced to a system of integral equations for the current, which have logarithmic and singular kernels. It is shown that the presence of the plasma column can significantly influence the current distribution of the antenna as compared with the case of its location in free space.
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