Standing waves in a magnetized plasma cylinder of finite length

The magnetic field component B z generated in a magnetized plasma cylinder was measured at frequencies reaching from well below the first magnetoacoustic resonance up to the lower hybrid resonance. In this spectrum between 1 MHz and 100 MHz the first, second and even the third magnetoacoustic resonance have been identified. Investigation of the radial and axial dependence of B z at different plasma parameters shows the typical field distribution for geometric resonances. In the upper part of the spectrum, between the third magnetoacoustic resonance and the lower hybrid resonance, a sharp minimum has been observed.