Dust ion-acoustic shock-wave structures: Theory and laboratory experiments

An evolutionary theoretical model is developed that describes dust ion-acou stic shock waves in dusty plasma consisting of ions (treated in the hydrody namic approximation), Boltzmann electrons, and variable-charge dust grains. Account is taken not only of ionization, absorption, momentum loss by elec trons and ions in collisions with dust grains, and gas-kinetic pressure eff ects but also of the processes peculiar to laboratory plasmas. It is shown that the model is capable of describing all the main experimental results o n dust ion-acoustic shock waves [Q.-Z. Luo et al., Phys. Plasmas 6, 3455 (1 999); Y. Nakamura et al., Phys. Rev. Lett., 83, 1602 (1999)]. (C) 2001 MAIK "Nauka/Interperiodica".