Simple advecting structures and the edge of chaos in subcritical tokamak plasmas
Sign Up to like & getrecommendations! Published in 2018 at "Journal of Plasma Physics"
DOI: 10.1017/s0022377818001216
Abstract: In tokamak plasmas, sheared flows perpendicular to the driving temperature gradients can strongly stabilise linear modes. While the system is linearly stable, regimes with persistent nonlinear turbulence may develop, i.e. the system is subcritical. A… read more here.
Keywords: edge chaos; simple advecting; tokamak; tokamak plasmas ... See more keywords
Theoretical studies and simulations of mode structure symmetry breaking in tokamak plasmas in the presence of energetic particles
Sign Up to like & getrecommendations! Published in 2019 at "Plasma Physics and Controlled Fusion"
DOI: 10.1088/1361-6587/ab00c6
Abstract: breaking in tokamak plasmas Z. X. Lu, X. Wang, A. Bottino, E. Fable, W. Hornsby, Ph. Lauber, F. Zonca, C. Angioni Max-Planck-Institut f?̈?r Plasmaphysik, Garching, Germany C.R. ENEA Frascati C.P. 65, 00044 Frascati, Italy The… read more here.
Keywords: symmetry breaking; mode structure; symmetry; breaking tokamak ... See more keywords
Effects of the parallel acceleration on heavy impurity transport in turbulent tokamak plasmas
Sign Up to like & getrecommendations! Published in 2020 at "Plasma Physics and Controlled Fusion"
DOI: 10.1088/1361-6587/abd226
Abstract: A process specific to the dynamics of the heavy impurities in turbulent tokamak plasmas is found and analyzed. We show that the parallel stochastic acceleration is strongly coupled to the perpendicular transport and generates a… read more here.
Keywords: acceleration; transport; tokamak plasmas; parallel acceleration ... See more keywords
Low-frequency zonal flow eigen-structures in tokamak plasmas
Sign Up to like & getrecommendations! Published in 2021 at "Nuclear Fusion"
DOI: 10.1088/1741-4326/ac3f4c
Abstract: The nonlocal eigenmode analysis of low-frequency zonal flows (ZFs) in toroidally rotating tokamak plasmas is performed in the framework of the reduced one-fluid ideal magnetohydrodynamic model. It is shown that for typical profiles of plasma… read more here.
Keywords: tokamak plasmas; zonal flow; low frequency; frequency zonal ... See more keywords
Prevention of electron cyclotron current drive triggering explosive bursts in reversed magnetic shear tokamak plasmas for disruption avoidance
Sign Up to like & getrecommendations! Published in 2022 at "Nuclear Fusion"
DOI: 10.1088/1741-4326/ac4b9d
Abstract: An explosive burst excited by a neoclassical tearing mode (NTM) is one of the possible candidates for disruptive terminations in reversed magnetic shear (RMS) tokamak plasmas. For the purpose of disruption avoidance, numerical investigations have… read more here.
Keywords: tokamak plasmas; prevention; disruption; electron cyclotron ... See more keywords