Cutoff probe measurement in a magnetized plasma

Abstract

This paper proposes a model for a cutoff probe that can be applied even in magnetized plasma. By choosing an adequate permittivity element in the tensor of the gyrotropic Drude model and applying it to the previous cutoff probe model, a generalized expression for the cutoff frequency (f(cut)) of the magnetized cutoff probe is formulated as follows: f(cut)(2) approximate to f(uh)(2) = f(pe)(2) + f(ce)(2), where f(uh), f(pe), and f(ce) are the upper hybrid frequency, plasma frequency, and gyro- frequency, respectively. The detailed theory and experiment to support this result are presented and discussed through this paper. Published by AIP Publishing.