scholarly journals Theory of the jitter radiation in a magnetized plasma accompanying a temperature gradient

2016 ◽  
Vol 68 (2) ◽  
pp. 28
Author(s):  
Makoto Hattori ◽  
Kazushiro Fujiki
Keyword(s):  
Temperature Gradient ◽  
Magnetized Plasma ◽  
Jitter Radiation

scholarly journals Enstrophy non-conservation and the forward cascade of energy in two-dimensional electrostatic magnetized plasma turbulence

2020 ◽  
Vol 86 (4) ◽  
Author(s):  
G. G. Plunk
Keyword(s):  
Temperature Gradient ◽  
Plasma Turbulence ◽  
Magnetized Plasma ◽  
Larmor Radius ◽  
Ion Temperature ◽  
Fluid System ◽  
Ion Temperature Gradient ◽  
Zonal Flows ◽  
Electron Temperature Gradient ◽  
Enstrophy Cascade

A fluid system is derived to describe electrostatic magnetized plasma turbulence at scales somewhat larger than the Larmor radius of a given species. It is related to the Hasegawa–Mima equation, but does not conserve enstrophy, and, as a result, exhibits a forward cascade of energy, to small scales. The inertial-range energy spectrum is argued to be shallower than a $-11/3$ power law, as compared to the $-5$ law of the Hasegawa–Mima enstrophy cascade. This property, confirmed here by direct numerical simulations of the fluid system, may help explain the fluctuation spectrum observed in gyrokinetic simulations of streamer-dominated electron-temperature-gradient driven turbulence (Plunk et al., Phys. Rev. Lett., vol. 122, 2019, 035002), and also possibly some cases of ion-temperature-gradient driven turbulence where zonal flows are suppressed (Plunk et al., Phys. Rev. Lett., vol. 118, 2017, 105002).

Electromagnetic ion-temperature-gradient modes and anomalous transport in a nonuniform magnetized plasma with equilibrium flows

2000 ◽  
Vol 7 (4) ◽  
pp. 1125-1131 ◽  
Author(s):  
Tariq Rafiq ◽  
Anisa Qamar ◽  
Arshad M. Mirza ◽  
G. Murtaza ◽  
P. K. Shukla
Keyword(s):  
Temperature Gradient ◽  
Anomalous Transport ◽  
Magnetized Plasma ◽  
Ion Temperature ◽  
Ion Temperature Gradient
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