Interplay between intermittency and dissipation in collisionless plasma turbulence
Klein, Kristopher G.
Chandran, Benjamin D. G.
Hoppock, Ian W.
Bowen, Trevor A.
Salem, Chadi S.
Bale, Stuart D.
AffiliationUniv Arizona, Lunar & Planetary Lab
MetadataShow full item record
PublisherCAMBRIDGE UNIV PRESS
CitationMallet, A., Klein, K. G., Chandran, B. D., Grošelj, D., Hoppock, I. W., Bowen, T. A., ... & Bale, S. D. (2019). Interplay between intermittency and dissipation in collisionless plasma turbulence. Journal of Plasma Physics, 85(3).
JournalJOURNAL OF PLASMA PHYSICS
Rights© Cambridge University Press 2019
Collection InformationThis item from the UA Faculty Publications collection is made available by the University of Arizona with support from the University of Arizona Libraries. If you have questions, please contact us at email@example.com.
AbstractWe study the damping of collisionless Alfvenic turbulence in a strongly magnetised plasma by two mechanisms: stochastic heating (whose efficiency depends on the local turbulence amplitude delta z(lambda)) and linear Landau damping (whose efficiency is independent of delta z(lambda)), describing in detail how they affect and are affected by intermittency. The overall efficiency of linear Landau damping is not affected by intermittency in critically balanced turbulence, while stochastic heating is much more efficient in the presence of intermittent turbulence. Moreover, stochastic heating leads to a drop in the scale-dependent kurtosis over a narrow range of scales around the ion gyroscale.
Note6 month embargo; published online 14 June 2019
VersionFinal accepted manuscript
SponsorsNSF [AGS-1624501, PHY-1500041]; NASA [NNX16AM23G, NNX16AI59G, NNX14AJ70G, NNX16AP95G, NNX15AI80, NNX16AG81G, NNN06AA01C, NNX17AI18G]; NSF SHINE