Helicon wave excitation and propagation in a toroidal heliac: Experiment and theory
- 1 March 1995
- journal article
- Published by AIP Publishing in Physics of Plasmas
- Vol. 2 (3), 803-810
- https://doi.org/10.1063/1.871432
Abstract
In this paper a comparison between theoretical calculations and experimental measurements of helicon wave coupling by a partial‐turn shielded antenna in a toroidalheliac is presented. Despite the complicated heliac geometry, the wave dispersion, field profiles, and antenna radiation resistance are described well by a cylindrical uniform plasma theory. It also presents a simple formula relating the radiation resistance to the measuredwavemagnetic field per unit antenna current. Finally, the scaling of these results to the Heliac‐1 (H‐1) [Fusion Technol. 17, 123 (1990)]; a larger heliac now operating at the Australian National University (ANU), is discussed.Keywords
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