TY - JOUR
T1 - On distance of turbulent plasma from thermal equilibrium
AU - Itoh, Sanae I.
AU - Itoh, Kimitaka
PY - 2010/12
Y1 - 2010/12
N2 - A trial to quantify the deviation of turbulent plasma state from that in thermal equilibrium is made. Considering an example of drift wave-zonal flow fluctuations, some aspects, e.g., the fluctuation energy density, and the associated transport, etc., for the evaluation of the distance between them are shown. Apart from the geometrical factors as well as the instability sources, the ratio between ion gyroradius and density gradient scale length, ρi/Ln, is found to be a key parameter that denotes the distance between them. A way that characterizes and quantifies the distance of "far" from thermal equilibrium is searched for.
AB - A trial to quantify the deviation of turbulent plasma state from that in thermal equilibrium is made. Considering an example of drift wave-zonal flow fluctuations, some aspects, e.g., the fluctuation energy density, and the associated transport, etc., for the evaluation of the distance between them are shown. Apart from the geometrical factors as well as the instability sources, the ratio between ion gyroradius and density gradient scale length, ρi/Ln, is found to be a key parameter that denotes the distance between them. A way that characterizes and quantifies the distance of "far" from thermal equilibrium is searched for.
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U2 - 10.1143/JPSJ.79.124501
DO - 10.1143/JPSJ.79.124501
M3 - Article
AN - SCOPUS:78651253074
SN - 0031-9015
VL - 79
JO - Journal of the Physical Society of Japan
JF - Journal of the Physical Society of Japan
IS - 12
M1 - 124501
ER -