Twisted Landau damping rates in multi-component dusty plasmas

Journal Article · Tue Mar 15 00:00:00 EDT 2016 · Physics of Plasmas

DOI:https://doi.org/10.1063/1.4944396· OSTI ID:22599091

Ali, S. ^[1]; Bukhari, S. ^[1]; Mendonca, J. T. ^[2]

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1. National Center for Physics at Quaid-e-Azam University Campus, Shahdra Valley Road, Islamabad 44000 (Pakistan)
2. IPFN, Instituto Superior Tecnico, Av. Rovisco Pais 1, Lisboa 1049-001 (Portugal)

Keeping in view the kinetic treatment for plasma particles, the electrostatic twisted dust-acoustic (DA) and dust-ion-acoustic (DIA) waves are investigated in a collisionless unmagnetized multi-component dusty plasma, whose constituents are the electrons, singly ionized positive ions, and negatively charged massive dust particulates. With this background, the Vlasov–Poisson equations are coupled together to derive a generalized dielectric constant by utilizing the Laguerre-Gaussian perturbed distribution function and electrostatic potential in the paraxial limit. The dispersion and damping rates of twisted DA and DIA waves are analyzed with finite orbital angular momentum states in a multi-component dusty plasma. Significant modifications concerning the real wave frequencies and damping rates appeared with varying twisted dimensionless parameter and dust concentration. In particular, it is shown that dust concentration enhances the phase speed of the DIA waves in contrary to DA waves, whereas the impact of twisted parameter reduces the frequencies of both DA and DIA waves. The results should be useful for the understanding of particle transport and trapping phenomena caused by wave excitation in laboratory dusty plasmas.

• OSTI ID: 22599091
• Journal Information: Physics of Plasmas, Vol. 23, Issue 3; Other Information: (c) 2016 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 1070-664X
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ABUNDANCE
BOLTZMANN-VLASOV EQUATION
CATIONS
DIELECTRIC MATERIALS
DISPERSIONS
DISTRIBUTION FUNCTIONS
DUSTS
ELECTRONS
EXCITATION
GAUSS FUNCTION
LAGUERRE POLYNOMIALS
LANDAU DAMPING
ORBITAL ANGULAR MOMENTUM
PARTICULATES
PERMITTIVITY
PLASMA
POISSON EQUATION