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Modulational instability of short-wavelength ion waves in strongly coupled dusty plasmas
1Key Laboratory of Beam Technology and Materials Modification of Ministry of Education, Beijing Normal University, Beijing 100875, China. bsxie@bnu.edu.cn
Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics
|February 28, 2002
Abstract:
Modulational instability of electrostatic short-wavelength ion waves in plasmas containing strongly coupled dusts with variable charge is considered. The evolution equations for the ion waves modulated by slow dust motion are obtained. The instability behavior differs considerably from that of plasmas with weakly coupled dust grains and depends strongly on the Coulomb coupling parameter as well as the dust-charge relaxation rate.