Abstract
A possibility of ion-heating by a coherent ion-acoustic wave is studied. Ions are accelerated periodically by the electrostatic potential of the ion-acoustic wave and their oscillation energy is converted into the thermal energy of ions through the collision with the neutral atoms in plasma. The Monte Carlo method applies to obtaining the heating-rate as the function of the quantities-the amplitude of electrostatic potential, the collision frequency and the mean-life of ions. The results agree with the experiment by Kawai et al., in which the ion-acoustic turbulence is excited due to the current-driven instability and is accompanied by the coherent wave with large wavelength. It is shown that the heating-rate is proportional to the amplitude of coherent wave.
