Results 21 to 30 of about 28,655 (296)
Formation of convective cells in the scrape-off layer of the CASTOR tokamak [PDF]
, 2004 Understanding of the scrape-off layer (SOL) physics in tokamaks requires diagnostics with sufficient temporal and spatial resolution. This contribution describes results of experiments performed in the SOL of the CASTOR tokamak (R=40 cm, a = 6 cm) by ...
Counsell G F Cohen R H Hellander P Ryutov D D the MAST team +20 more
core +3 more sources
SOL parallel momentum loss in ASDEX Upgrade and comparison with SOLPS
Nuclear Materials and Energy, 2017 An H-mode database of ASDEX Upgrade plasmas with improved diagnostics for a variety of different plasma conditions has been analysed to study the momentum removal in the Scrape-Off Layer (SOL).
I. Paradela Pérez +5 more
doaj +1 more source
Radial convection of finite ion temperature, high amplitude plasma blobs [PDF]
, 2014 We present results from simulations of seeded blob convection in the scrape-off-layer of magnetically confined fusion plasmas. We consistently incorporate high fluctuation amplitude levels and finite Larmor radius (FLR) effects using a fully nonlinear ...
Kendl, A., Madsen, J., Wiesenberger, M.
core +2 more sources
Convergence of statistical moments of particle density time series in scrape-off layer plasmas [PDF]
, 2015 Particle density fluctuations in the scrape-off layer of magnetically confined plasmas, as measured by gas-puff imaging or Langmuir probes, are modeled as the realization of a stochastic process in which a superposition of pulses with a fixed shape, an ...
O. E. Garcia, Pecseli H. L., R. Kube
core +2 more sources
Nuclear Fusion, 2023 The dynamics of the screening effect of Ar impurity by the injection of additional Ne has been studied through time-dependent analysis with the integrated divertor code SONIC. In the preceding study (Yamoto et al 2020 Plasma Phys. Control.
Shohei Yamoto +4 more
doaj +1 more source
Reduced physics model of the tokamak Scrape-Off-Layer for pulse design
Nuclear Materials and Energy, 2023 The dynamic interplay between the core and the edge plasma has important consequences in the confinement and heating of fusion plasma. The transport of the Scrape-Off-Layer (SOL) plasma imposes boundary conditions on the core plasma, and neutral ...
X. Zhang +3 more
doaj +1 more source
Velocity shear, turbulent saturation, and steep plasma gradients in the scrape-off layer of inner-wall limited tokamaks [PDF]
, 2016 The narrow power decay-length ($\lambda_q$), recently found in the scrape-off layer (SOL) of inner-wall limited (IWL) discharges in tokamaks, is studied using 3D, flux-driven, global two-fluid turbulence simulations.
Halpern, Federico D., Ricci, Paolo
core +2 more sources
On the Turbulent Behavior of a Magnetically Confined Plasma near the X-Point
Fluids, 2022 We construct a model for the turbulence near the X-point of a Tokamak device and, under suitable assumptions, we arrive to a closed equation for the electric field potential fluctuations.
Giovanni Montani +2 more
doaj +1 more source
A Drift-Kinetic Analytical Model for SOL Plasma Dynamics at Arbitrary Collisionality [PDF]
, 2017 A drift-kinetic model to describe the plasma dynamics in the scrape-off layer region of tokamak devices at arbitrary collisionality is derived. Our formulation is based on a gyroaveraged Lagrangian description of the charged particle motion, and the ...
Jorge, R., Loureiro, N. F., Ricci, P.
core +1 more source
Scrape‐Off Layer Turbulence Theory and Simulations [PDF]
Contributions to Plasma Physics, 1998 AbstractSignificant investigations in the area of scrape‐off layer (SOL) turbulence theory and simulations are reviewed. The paper begins with description and derivation of the various models investigating specific linear modes as well as a discussion of the regions of validity.
Xu, X.Q., Cohen, R.H.
openaire +1 more source