Abstract
The dust acoustic wave is a kind of sound wave in which the inertia is provided by the heavy charged dust grains and the tension is provided by the ion and electron pressures. Its phase velocity is much smaller than the electron and ion thermal velocities. Dust acoustic waves have been investigated theoretically and few experiments have been performed. We have investigated the excitation of dust acoustic waves in a plasma having negatively charged dust grains by an ion beam, by considering basic equations. After going through the mathematical details systematically, our results have been found different from some other investigation. The reason for the difference has been found the discrepancies in that work.
Published Version
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