Helicon wave excitation with helical antennas | Zendy

Max Light | Zendy; Francis F. Chen | Zendy

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Helicon wave excitation with helical antennas

Author(s) -

Max Light,

Francis F. Chen

Publication year - 1995

Publication title -

physics of plasmas

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.75

H-Index - 160

eISSN - 1089-7674

pISSN - 1070-664X

DOI - 10.1063/1.871461

Subject(s) - helicon , physics , excitation , excited state , amplitude , magnetic field , atomic physics , coaxial , plasma , helical antenna , antenna (radio) , optics , dipole antenna , slot antenna , electrical engineering , quantum mechanics , engineering

Components of the wave magnetic field in a helicon discharge have been measured with a single‐turn, coaxial magnetic probe. Left‐ and right‐handed helical antennas, as well as plane‐polarized antennas, were used; and the results were compared with the field patterns computed for a nonuniform plasma. The results show that the right‐hand circularly polarized mode is preferentially excited with all antennas, even those designed to excite the left‐hand mode. For right‐hand excitation, the radial amplitude profiles are in excellent agreement with computations.

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