Excitation of Kelvin Helmholtz instability by an ion beam in a plasma with negatively charged dust grains

Rani, Kavita; Sharma, Suresh C.

doi:10.1063/1.4913230

Title: Excitation of Kelvin Helmholtz instability by an ion beam in a plasma with negatively charged dust grains

Full Record
Other Related Research

Abstract

An ion beam propagating through a magnetized dusty plasma drives Kelvin Helmholtz Instability (KHI) via Cerenkov interaction. The frequency of the unstable wave increases with the relative density of negatively charged dust grains. It is observed that the beam has stabilizing effect on the growth rate of KHI for low shear parameter, but for high shear parameter, the instability is destabilized with relative density of negatively charged dust grains.

Authors:

Rani, Kavita ^[1]; Sharma, Suresh C. ^[2]

Department of Applied Physics, Bhagwan Parshuram Institute of Technology, Sector-17, Rohini, New Delhi 110 089 (India)
Department of Applied Physics, Delhi Technological University (DTU), Shahbad Daulatpur, Bawana Road, New Delhi 110 042 (India)

Publication Date:: Sun Feb 15 00:00:00 EST 2015

OSTI Identifier:: 22408161

Resource Type:: Journal Article

Journal Name:: Physics of Plasmas

Additional Journal Information:: Journal Volume: 22; Journal Issue: 2; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 1070-664X

Country of Publication:: United States

Language:: English

Subject:: 70 PLASMA PHYSICS AND FUSION TECHNOLOGY; CHERENKOV RADIATION; EXCITATION; HELMHOLTZ INSTABILITY; INTERACTIONS; ION BEAMS; MAGNETIZATION; PLASMA; SHEAR

Citation Formats


                    Rani, Kavita, and Sharma, Suresh C. Excitation of Kelvin Helmholtz instability by an ion beam in a plasma with negatively charged dust grains.  United States: N. p., 2015. 
        Web.  doi:10.1063/1.4913230.

Copy to clipboard


                    Rani, Kavita, & Sharma, Suresh C. Excitation of Kelvin Helmholtz instability by an ion beam in a plasma with negatively charged dust grains.  United States.  https://doi.org/10.1063/1.4913230

Copy to clipboard


                    Rani, Kavita, and Sharma, Suresh C. 2015.  
        "Excitation of Kelvin Helmholtz instability by an ion beam in a plasma with negatively charged dust grains".  United States.  https://doi.org/10.1063/1.4913230.

Copy to clipboard


                    
@article{osti_22408161,

  title        = {Excitation of Kelvin Helmholtz instability by an ion beam in a plasma with negatively charged dust grains},

  author       = {Rani, Kavita and Sharma, Suresh C.},

  abstractNote = {An ion beam propagating through a magnetized dusty plasma drives Kelvin Helmholtz Instability (KHI) via Cerenkov interaction. The frequency of the unstable wave increases with the relative density of negatively charged dust grains. It is observed that the beam has stabilizing effect on the growth rate of KHI for low shear parameter, but for high shear parameter, the instability is destabilized with relative density of negatively charged dust grains.},

  doi          = {10.1063/1.4913230},

  url          = {https://www.osti.gov/biblio/22408161},
  journal      = {Physics of Plasmas},

  issn         = {1070-664X},

  number       = 2,

  volume       = 22,

  place        = {United States},

  year         = {Sun Feb 15 00:00:00 EST 2015},

  month        = {Sun Feb 15 00:00:00 EST 2015}

}

Copy to clipboard

Journal Article:

https://doi.org/10.1063/1.4913230

Other availability

Find in Google Scholar

Search WorldCat to find libraries that may hold this journal

Save / Share:

Export Metadata

Save to My Library

Similar records in OSTI.GOV collections:

Charged Grains and Kelvin–Helmholtz Instability in Molecular Clouds

Journal Article Pandey, B. - Astronomical Journal (New York, N.Y. Online)

The presence of dust grains profoundly affects the diffusion of the magnetic field in molecular clouds. When the electrons and ions are well coupled to the magnetic field and charged grains are only indirectly coupled, emergent Hall diffusion may dominate over all the other non-ideal magnetohydrodynamic (MHD) effects in a partially ionized dusty cloud. The low-frequency, long (∼0.01–1 pc) wavelength dispersive MHD waves will propagate in such a medium with the polarization of the waves determined by the dust charge density or the dust size distribution. In the presence of shear flows, these waves may become Kelvin–Helmholtz unstable with themore »« less
https://doi.org/10.3847/1538-3881/AAFC32
FORMING PLANETESIMALS BY GRAVITATIONAL INSTABILITY. I. THE ROLE OF THE RICHARDSON NUMBER IN TRIGGERING THE KELVIN-HELMHOLTZ INSTABILITY

Journal Article Lee, Aaron; Chiang, Eugene; Asay-Davis, Xylar; ... - Astrophysical Journal

Gravitational instability (GI) of a dust-rich layer at the midplane of a gaseous circumstellar disk is one proposed mechanism to form planetesimals, the building blocks of rocky planets and gas giant cores. Self-gravity competes against the Kelvin-Helmholtz instability (KHI): gradients in dust content drive a vertical shear which risks overturning the dusty subdisk and forestalling GI. To understand the conditions under which the disk can resist the KHI, we perform three-dimensional simulations of stratified subdisks in the limit that dust particles are small and aerodynamically well coupled to gas, thereby screening out the streaming instability and isolating the KHI. Eachmore »« less
https://doi.org/10.1088/0004-637X/718/2/1367
Excitation of dust acoustic waves by an ion beam in a plasma cylinder with negatively charged dust grains

Journal Article Sharma, Suresh; Kaur, Daljeet; Gahlot, Ajay; ... - Physics of Plasmas

An ion beam propagating through a plasma cylinder having negatively charged dust grains drives a low frequency electrostatic dust acoustic wave (DAW) to instability via Cerenkov interaction. The unstable wave frequencies and the growth rate increase with the relative density of negatively charged dust grains. The growth rate of the unstable mode scales to the one-third power of the beam density. The real part of the frequency of the unstable mode increases with the beam energy and scales to almost one-half power of the beam energy. The phase velocity, frequency, and wavelength results of the unstable mode are in compliancemore » with the experimental observations.« less
https://doi.org/10.1063/1.4897318
Competitions between Rayleigh-Taylor instability and Kelvin-Helmholtz instability with continuous density and velocity profiles

Journal Article Ye, W; He, X; Wang, L; ... - Physics of Plasmas

In this research, competitions between Rayleigh-Taylor instability (RTI) and Kelvin-Helmholtz instability (KHI) in two-dimensional incompressible fluids within a linear growth regime are investigated analytically. Normalized linear growth rate formulas for both the RTI, suitable for arbitrary density ratio with continuous density profile, and the KHI, suitable for arbitrary density ratio with continuous density and velocity profiles, are obtained. The linear growth rates of pure RTI ({gamma}{sub RT}), pure KHI ({gamma}{sub KH}), and combined RTI and KHI ({gamma}{sub total}) are investigated, respectively. In the pure RTI, it is found that the effect of the finite thickness of the density transition layermore »« less
https://doi.org/10.1063/1.3552106
KELVIN-HELMHOLTZ INSTABILITY IN PARTIALLY IONIZED COMPRESSIBLE PLASMAS

Journal Article Soler, R; Goossens, M; Diaz, A - Astrophysical Journal

The Kelvin-Helmholtz instability (KHI) has been observed in the solar atmosphere. Ion-neutral collisions may play a relevant role for the growth rate and evolution of the KHI in solar partially ionized plasmas such as in, e.g., solar prominences. Here, we investigate the linear phase of the KHI at an interface between two partially ionized magnetized plasmas in the presence of a shear flow. The effects of ion-neutral collisions and compressibility are included in the analysis. We obtain the dispersion relation of the linear modes and perform parametric studies of the unstable solutions. We find that, in the incompressible case, themore »« less
https://doi.org/10.1088/0004-637X/749/2/163

Similar Records