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Stopping power of a charged dust projectile in the presence of the dust acoustic wave in dusty plasmas

We present formulae for the stopping power of a charged dust projectile in dusty plasmas containing the dust acoustic wave. The dependence of the test dust charge mach number (test dust charge speed/dust acoustic speed) as well as the other parameters (the plasma temperature, the dust radius) on the stopping power is discussed. It is found that highly charged dust projectiles moving with a speed much slower than the dust acoustic speed contribute mostly to the dust energy loss in dusty plasmas.