New cut-off frequency for low-frequency electromagnetic waves in a multi-ion magnetoplasma with charged dust particulates

Properties of low-frequency electromagnetic waves propagating in a multi-ion magnetoplasma with an ensemble of negatively charged stationary dust particles are investigated. It is found that the combined effects of negatively charged stationary dust particles and additional ion-species do not only significantly modify the existing cut-off and resonance frequencies, but also introduce a new cut-off frequency for the low-frequency electromagnetic waves. New laboratory experiments in a magnetized plasma with two-ion species and a dust component should be conducted to verify our theoretical predictions