Results 31 to 40 of about 28,655 (296)

Scaling laws for electron kinetic effects in tokamak scrape-off layer plasmas

open access: yesNuclear Fusion, 2023
Tokamak edge (scrape-off layer (SOL)) plasmas can exhibit non-local transport in the direction parallel to the magnetic field due to steep temperature gradients.
D. Power   +4 more
doaj   +1 more source

Modelling of turbulent impurity transport in fusion edge plasmas using measured and calculated ionization cross sections

open access: yes, 2014
Turbulent transport of trace impurities impurities in the edge and scrape-off-layer of tokamak fusion plasmas is modelled by three dimensional electromagnetic gyrofluid computations including evolution of plasma profile gradients.
Kendl, Alexander
core   +1 more source

Divertor erosion at ASDEX Upgrade during helium plasma operations

open access: yesNuclear Materials and Energy
The effect of helium plasma operation on the erosion of plasma-facing components at the low-field side divertor of ASDEX Upgrade was investigated during the 2022 helium experimental campaign. A set of tungsten-covered graphite samples with small platinum
Tomi Vuoriheimo   +10 more
doaj   +1 more source

Detachment scalings derived from 1D scrape-off-layer simulations

open access: yesNuclear Materials and Energy
Fusion power plants will require detachment to mitigate sputtering and keep divertor heat fluxes at tolerable levels. Controlling detachment on these devices may require the use of real-time scrape-off-layer modeling to complement the limited set of ...
Thomas Body   +6 more
doaj   +1 more source

Intermittent electron density and temperature fluctuations and associated fluxes in the Alcator C-Mod scrape-off layer [PDF]

open access: yes, 2018
The Alcator C-Mod mirror Langmuir probe system has been used to sample data time series of fluctuating plasma parameters in the outboard mid-plane far scrape-off layer. We present a statistical analysis of one second long time series of electron density,
Brunner, Dan   +6 more
core   +2 more sources

Kinetic simulations of electron heat flux in the scrape-off layer

open access: yesNuclear Materials and Energy, 2017
Parallel electron heat flux qe|| on open field lines is studied with the 1D2V kinetic Vlasov-Fokker-Planck (VFP) code KIPP [15–17]. In order to assess the importance of kinetic effects on the scrape-off layer heat transport in a systematic way, a series ...
M. Zhao, A.V. Chankin, D.P. Coster
doaj   +1 more source

Non‐local heat flux application for scrape‐off layer plasma [PDF]

open access: yesContributions to Plasma Physics, 2018
The non‐local expression proposed by Luciani‐Mora‐Virmont is implemented in a one dimensional fluid model for the scrape‐off layer. Analytical solutions for heat equation are discussed as well as the impact of sheath boundary conditions on the continuity of the temperature profile.
Bufferand, Hugo   +9 more
openaire   +6 more sources

Effect of local wall clearance on scrape-off layer electron density profiles in ASDEX Upgrade

open access: yesNuclear Fusion
The plasma electron density is measured with multiple diagnostics in the scrape-off layer of the ASDEX Upgrade tokamak. The recorded values are typically in good agreement in the case of exponentially decaying profiles at low densities, but they become ...
B. Tal   +16 more
doaj   +1 more source

Hyperosmotic stress induces PARP1‐mediated HPF1‐dependent mono(ADP‐ribosyl)ation

open access: yesFEBS Letters, EarlyView.
Sorbitol‐induced hyperosmotic stress rapidly induces reversible mono(ADP‐ribosyl)ation (MARylation) on PARP1 without the signs of genotoxic signaling. We show that PARP1 autoMARylation is HPF1 dependent and forms hydroxylamine‐resistant O‐glycosidic linkages.
Anna Georgina Kopasz   +11 more
wiley   +1 more source

COMP–PMEPA1 axis promotes epithelial‐to‐mesenchymal transition in breast cancer cells

open access: yesMolecular Oncology, EarlyView.
This study reveals that cartilage oligomeric matrix protein (COMP) promotes epithelial‐to‐mesenchymal transition (EMT) in breast cancer. We identify PMEPA1 (protein TMEPAI) as a novel COMP‐binding partner that mediates EMT via binding to the TSP domains of COMP, establishing the COMP–PMEPA1 axis as a key EMT driver in breast cancer.
Konstantinos S. Papadakos   +6 more
wiley   +1 more source

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