Open AccessShear-Alfven Waves in Gyrokinetic Plasmas
Author(s) -
W. Wei-li Lee,
J.L.V. Lewandowski,
T.S. Hahm,
Zhihong Lin
Publication year - 2000
Publication title -
osti oai (u.s. department of energy office of scientific and technical information)
Language(s) - English
Resource type - Reports
DOI - 10.2172/765443
Subject(s) - physics , dissipation , plasma , adiabatic process , shear (geology) , distribution function , thermal , mechanics , particle (ecology) , classical mechanics , computational physics , thermodynamics , materials science , quantum mechanics , oceanography , composite material , geology
It is found that the thermal fluctuation level of the shear-Alfven waves in a gyrokinetic plasma decreases with plasma b(* cs2/uA2), where cs is the ion acoustic speed and uA is the Alfven velocity. This unique thermodynamic property based on the fluctuation-dissipation theorem is verified in this paper using a new gyrokinetic particle simulation scheme, which splits the particle distribution function into the equilibrium part as well as the adiabatic and nonadiabatic parts
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