# Gyrokinetic water-bag modeling of a plasma column: Magnetic moment distribution and finite Larmor radius effects

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The present discussion revisits the problem of nonresonant heating of ions by AlfvÃ©nic turbulence. It is shown that in the limit of weak AlfvÃ©nic turbulence it is appropriate to describe the nonresonant heating of protons as perpendicular pseudoheating. However, in a more general situation...

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Plasma density fluctuations are being investigated experimentally in CSDX, a magnetized plasma column. We show that an effective Reynolds number of the plasma is directly proportional to axial magnetic field strength B and inversely proportional to the ion-neutral collsion frequency, which in...

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Experiments on the L-2M stellarator have shown the occurrence of steady-state low-frequency strong structural (LFSS) turbulence throughout the entire plasma column. A key feature of LFSS turbulence is the presence of stochastic plasma structures. It is shown that different types of LFSS...

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In this paper we compare the structure and motion of edge turbulence observed in L-mode vs. H-mode plasmas in the National Spherical Torus Experiment (NSTX) [M. Ono, M. G. Bell, R. E. Bell et al., Plasma Phys. Controlled Fusion 45, A335 (2003)]. The radial and poloidal correlation lengths are...

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In the present article, the large eddy simulation (LES) technique for the study of compressible magnetohydrodynamic turbulence is developed. The filtered equations of magnetohydrodynamics of compressible fluid are obtained with the use of a mass-weighted filtering procedure (Favre filtering)....