skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Effect of driving frequency on excitation of turbulence in a kinetic plasma

Abstract

The effect of driving frequency on the efficiency of turbulence generation through magnetic forcing is studied using kinetic hybrid simulations with fully kinetic ions and fluid electrons. The efficiency of driving is quantified by examining the energy input into magnetic field as well as the thermal energy for various driving frequencies. The driving is efficient in exciting turbulence and heating the plasma when the time period of the driving is larger than the nonlinear time of the system. For driving at faster time scales, the energy input is weak and the steady state energy is much lower. The heating of the plasma is correlated with intermittent properties of the magnetic field, which are manifested as non-Gaussian statistics. Implications for turbulence in solar corona are discussed.

Authors:
; ;  [1];  [2];  [3]
  1. Department of Physics and Astronomy, 217 Sharp Laboratory, University of Delaware, Newark, Delaware 19716 (United States)
  2. Dipartimento di Fisica, Universita' della Calabria, I-87036 Cosenza (Italy)
  3. Army Research Lab, Aberdeen, Maryland 21005 (United States)
Publication Date:
OSTI Identifier:
22043486
Resource Type:
Journal Article
Journal Name:
Physics of Plasmas
Additional Journal Information:
Journal Volume: 18; Journal Issue: 9; 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; EFFICIENCY; ELECTRONS; EXCITATION; FLUIDS; IONS; MAGNETIC FIELDS; MAGNETOHYDRODYNAMICS; PLASMA; PLASMA HEATING; PLASMA SIMULATION; SOLAR CORONA; STATISTICS; STEADY-STATE CONDITIONS; TURBULENCE

Citation Formats

Parashar, T. N., Shay, M. A., Matthaeus, W. H., Servidio, S., and Breech, B. Effect of driving frequency on excitation of turbulence in a kinetic plasma. United States: N. p., 2011. Web. doi:10.1063/1.3630926.
Parashar, T. N., Shay, M. A., Matthaeus, W. H., Servidio, S., & Breech, B. Effect of driving frequency on excitation of turbulence in a kinetic plasma. United States. doi:10.1063/1.3630926.
Parashar, T. N., Shay, M. A., Matthaeus, W. H., Servidio, S., and Breech, B. Thu . "Effect of driving frequency on excitation of turbulence in a kinetic plasma". United States. doi:10.1063/1.3630926.
@article{osti_22043486,
title = {Effect of driving frequency on excitation of turbulence in a kinetic plasma},
author = {Parashar, T. N. and Shay, M. A. and Matthaeus, W. H. and Servidio, S. and Breech, B.},
abstractNote = {The effect of driving frequency on the efficiency of turbulence generation through magnetic forcing is studied using kinetic hybrid simulations with fully kinetic ions and fluid electrons. The efficiency of driving is quantified by examining the energy input into magnetic field as well as the thermal energy for various driving frequencies. The driving is efficient in exciting turbulence and heating the plasma when the time period of the driving is larger than the nonlinear time of the system. For driving at faster time scales, the energy input is weak and the steady state energy is much lower. The heating of the plasma is correlated with intermittent properties of the magnetic field, which are manifested as non-Gaussian statistics. Implications for turbulence in solar corona are discussed.},
doi = {10.1063/1.3630926},
journal = {Physics of Plasmas},
issn = {1070-664X},
number = 9,
volume = 18,
place = {United States},
year = {2011},
month = {9}
}