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Title: Fully kinetic simulation of ion acoustic and dust-ion acoustic waves

Abstract

A series of numerical simulations is presented, based on a recurrence-free Vlasov kinetic model using kinetic phase point trajectories. All plasma components are modeled kinetically via a Vlasov evolution equation, then coupled through Poisson's equation. The dynamics of ion acoustic waves in an electron-ion and in a dusty (electron-ion-dust) plasma configuration are investigated, focusing on wave decay due to Landau damping and, in particular, on the parametric dependence of the damping rate on the dust concentration and on the electron-to-ion temperature ratio. In the absence of dust, the occurrence of damping was observed, as expected, and its dependence to the relative magnitude of the electron vs ion temperature(s) was investigated. When present, the dust component influences the charge balance, enabling dust-ion acoustic waves to survive Landau damping even in the extreme regime where T{sub e} {approx_equal} T{sub i}. The Landau damping rate is shown to be minimized for a strong dust concentration or/and for a high value of the electron-to-ion temperature ratio. Our results confirm earlier theoretical considerations and contribute to the interpretation of experimental observations of dust-ion acoustic wave characteristics.

Authors:
 [1];  [2];  [3];  [1]
  1. Amirkabir University of Technology, 424 Hafez Ave., Tehran (Iran, Islamic Republic of)
  2. (United Kingdom)
  3. Center for Plasma Physics, Department of Physics and Astronomy, Queen's University Belfast, BT7 1NN Northern Ireland (United Kingdom)
Publication Date:
OSTI Identifier:
22046913
Resource Type:
Journal Article
Journal Name:
Physics of Plasmas
Additional Journal Information:
Journal Volume: 18; Journal Issue: 7; Other Information: (c) 2011 American Institute of Physics; 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; BOLTZMANN-VLASOV EQUATION; COMPUTERIZED SIMULATION; DUSTS; ELECTRON TEMPERATURE; ELECTRONS; ION ACOUSTIC WAVES; ION TEMPERATURE; IONS; LANDAU DAMPING; PLASMA; PLASMA SIMULATION; POISSON EQUATION

Citation Formats

Hosseini Jenab, S. M., Center for Plasma Physics, Department of Physics and Astronomy, Queen's University Belfast, BT7 1NN Northern Ireland, Kourakis, I., and Abbasi, H.. Fully kinetic simulation of ion acoustic and dust-ion acoustic waves. United States: N. p., 2011. Web. doi:10.1063/1.3609814.
Hosseini Jenab, S. M., Center for Plasma Physics, Department of Physics and Astronomy, Queen's University Belfast, BT7 1NN Northern Ireland, Kourakis, I., & Abbasi, H.. Fully kinetic simulation of ion acoustic and dust-ion acoustic waves. United States. doi:10.1063/1.3609814.
Hosseini Jenab, S. M., Center for Plasma Physics, Department of Physics and Astronomy, Queen's University Belfast, BT7 1NN Northern Ireland, Kourakis, I., and Abbasi, H.. Fri . "Fully kinetic simulation of ion acoustic and dust-ion acoustic waves". United States. doi:10.1063/1.3609814.
@article{osti_22046913,
title = {Fully kinetic simulation of ion acoustic and dust-ion acoustic waves},
author = {Hosseini Jenab, S. M. and Center for Plasma Physics, Department of Physics and Astronomy, Queen's University Belfast, BT7 1NN Northern Ireland and Kourakis, I. and Abbasi, H.},
abstractNote = {A series of numerical simulations is presented, based on a recurrence-free Vlasov kinetic model using kinetic phase point trajectories. All plasma components are modeled kinetically via a Vlasov evolution equation, then coupled through Poisson's equation. The dynamics of ion acoustic waves in an electron-ion and in a dusty (electron-ion-dust) plasma configuration are investigated, focusing on wave decay due to Landau damping and, in particular, on the parametric dependence of the damping rate on the dust concentration and on the electron-to-ion temperature ratio. In the absence of dust, the occurrence of damping was observed, as expected, and its dependence to the relative magnitude of the electron vs ion temperature(s) was investigated. When present, the dust component influences the charge balance, enabling dust-ion acoustic waves to survive Landau damping even in the extreme regime where T{sub e} {approx_equal} T{sub i}. The Landau damping rate is shown to be minimized for a strong dust concentration or/and for a high value of the electron-to-ion temperature ratio. Our results confirm earlier theoretical considerations and contribute to the interpretation of experimental observations of dust-ion acoustic wave characteristics.},
doi = {10.1063/1.3609814},
journal = {Physics of Plasmas},
issn = {1070-664X},
number = 7,
volume = 18,
place = {United States},
year = {2011},
month = {7}
}