Modulational instabilities in two-dimensional magnetized dust-lattice
- Department of Physics, Faculty of Science, Arak-University, 38156-8-8349 Arak (Iran, Islamic Republic of)
The transverse oscillations of paramagnetic dust grains in hexagonal dusty plasma crystal are discussed. The nonlinearity, which is related to the sheath electric/magnetic field(s) and to the weak inter grain interactions (magnetic dipole), is shown to lead to the generation of phase harmonics. In the case of propagating two-dimensional transverse dust-lattice modes in an arbitrary direction, it is shown the modulational instability of the carrier wave is due to self-interaction. The stability depends on the form of the electric field, the magnetic field, and the magnetic permeability of dust particles. The long term evolution of the modulated wave packet is described by a discrete nonlinear Schrodinger equation and it is solved numerically by Adomian decomposition method.
- OSTI ID:
- 22047099
- Journal Information:
- Physics of Plasmas, Vol. 18, Issue 11; Other Information: (c) 2011 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 1070-664X
- Country of Publication:
- United States
- Language:
- English
Similar Records
Nonlinear modulated dust lattice wave packets in two-dimensional hexagonal dust crystals
Modulational instability of dust acoustic waves in dusty plasmas: Modulation obliqueness, background ion nonthermality, and dust charging effects
Related Subjects
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
DUSTS
ELECTRIC FIELDS
HARMONICS
MAGNETIC DIPOLES
MAGNETIC FIELDS
MAGNETIC MOMENTS
MAGNETIC SUSCEPTIBILITY
MAGNETOHYDRODYNAMICS
NONLINEAR PROBLEMS
PARAMAGNETISM
PLASMA
PLASMA INSTABILITY
PLASMA SHEATH
PLASMA WAVES
SCHROEDINGER EQUATION
TWO-DIMENSIONAL CALCULATIONS
WAVE PACKETS