Standing waves in a magnetized plasma cylinder of finite length

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The magnetic field component Bz 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 Bz 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.