ITB formation in gyrokinetic flux-driven ITG/TEM turbulence

K Imadera, Y Kishimoto - Plasma Physics and Controlled Fusion, 2022 - iopscience.iop.org
The formation mechanism of internal transport barriers (ITBs) in flux-driven turbulence is
studied by means of the full-f gyrokinetic code GKNET. In the adiabatic electron case with a …

Enhancement of residual stress by electromagnetic fluctuations: A quasi-linear study

HH Kaang, H Jhang, R Singh, J Kim, SS Kim - Physics of Plasmas, 2016 - pubs.aip.org
A study is conducted on the impact of electromagnetic (EM) fluctuations on residual
Reynolds stress in the context of the quasi-linear theory. We employ a fluid formulation …

Intrinsic non-inductive current driven by ETG turbulence in tokamaks

R Singh, PK Kaw, R Singh, ÖD Gürcan - Physics of Plasmas, 2017 - pubs.aip.org
Motivated by observations and physics understanding of the phenomenon of intrinsic
rotation, it is suggested that similar considerations for electron dynamics may result in …

Symmetry breaking induced by the parity change in global electromagnetic ion temperature gradient modes

HH Kaang, SS Kim, H Jhang, J Kim - Physics of Plasmas, 2018 - pubs.aip.org
We perform a computational study of the effects of finite plasma β (= plasma thermal
energy/magnetic energy) on the residual stress in the context of the quasi-linear theory. The …

A quasi-linear analysis of the impurity effect on turbulent momentum transport and residual stress

SH Ko, H Jhang, R Singh - Physics of Plasmas, 2015 - pubs.aip.org
We study the impact of impurities on turbulence driven intrinsic rotation (via residual stress)
in the context of the quasi-linear theory. A two-fluid formulation for main and impurity ions is …

Effect of Sheared Magnetic Field on E× B Drift Instability in Plasma

S Nasrin, S Das, M Bose - Ukrainian Journal of Physics, 2023 - ujp.bitp.kiev.ua
The influence of the magnetic shear on ion drift waves has been investigated for plasmas in
the plane slab geometry with a density gradient. A differential equation is derived to describe …