Abstract. Low frequency f = ⅕ − ⅓f_ci, (f_ci: ion gyro frequency in the external field B_w) waves are excited with an antenna which is compatible with a reactor in a plasma with field reversed configuration (FRC). Near and outside the separatrix r_s of the FRC plasma, though the applied wave is mainly in compressional mode, azimuthal and radial components are observed in the magnetic field disturbance of the excited wave, which propagate with the dispersion relation consistent with the shear Alfvén wave. These disturbances penetrate deep into the FRC plasma across the surface where the wave frequency exceeds local ion gyro frequency and propagate along magnetic lines of force with sound velocity, which behaviour is consistent with the shear Alfvén wave with finite temperature correction. Axial magnetic disturbance propagates axially and radially from the antenna across the plasma column.

PACS numbers: 52.35.Bj, 52.35.Dm, 52.50.Qt, 52.55.Lf

Print publication: Issue 10 (October 2003)
Received 15 October 2002, accepted for publication 11 August 2003
Published 16 September 2003