Results 21 to 30 of about 226,675 (301)

Vlasov simulation of the emissive plasma sheath with energy-dependent secondary emission coefficient and improved modeling for dielectric charging effects

Frontiers in Physics, 2022
A one-dimensional Vlasov–Poisson simulation code is employed to investigate the plasma sheath considering electron-induced secondary electron emission (SEE) and backscattering.
Guang-Yu Sun, Guang-Yu Sun, Shu Zhang, Bao-Hong Guo, An-Bang Sun, Guan-Jun Zhang   +5 more
doaj   +1 more source

Design considerations for the use of laser-plasma accelerators for advanced space radiation studies

, 2012
We present design considerations for the use of laser-plasma accelerators for mimicking space radiation and testing space-grade electronics. This novel application takes advantage of the inherent ability of laser-plasma accelerators to produce particle ...
Pretzler G, Rosenzweig JB, Koenigstein, T., Hidding, B., Karger, O., Pretzler, G., Konigstein T, Rosenzweig, J. B., Hidding B, Karger O   +9 more
core   +1 more source

Global 3D full-scale turbulence simulations of TCV-X21 experiments with SOLEDGE3X

Nuclear Materials and Energy
First principle modelling of edge plasma turbulence including neutrals and plasma recycling on the wall remains a challenge, in particular due to the long time scales necessary to simulate to reach particle balance.
H. Bufferand, G. Ciraolo, R. Düll, G. Falchetto, N. Fedorczak, Y. Marandet, V. Quadri, M. Raghunathan, N. Rivals, F. Schwander, E. Serre, S. Sureshkumar, P. Tamain, N. Varadarajan   +13 more
doaj   +1 more source

Analysis of the beryllium stability under standard and critical operation in a fusion reactor

Eurasian Journal of Physics and Functional Materials, 2021
The paper provides data on the peculiarity of change in the structure, structural phase changes and destructions in beryllium resulting from interaction with a near-wall plasma of fusion facilities. Beryllium resistance under conditions of ITER operation
I. A. Sokolov, M. K. Skakov, A. Zh. Miniyazov, B. T. Aubakirov, T. R. Tulenbergenov, A. V. Gradoboev   +5 more
doaj   +1 more source

Effect of anisotropic non-Maxwellian electron distribution function on plasma-wall interaction in Hall thrusters

, 2012
Due to the extreme plasma conditions in Hall thrusters, such as electron temperature anisotropy and non-Maxwellian electron distribution function (EDF), understanding the plasma-wall interaction is a very challenging task.
Wang, X. G., S. W. Qing, Song, M. J., Qing, S. W., Yu, D. R., X. G. Wang, D. R. Yu, Li, H., H. Li, M. J. Song   +9 more
core   +1 more source

Erosion estimates for the divertor and main wall components from STEP

Nuclear Fusion, 2023
The tungsten erosion within Spherical Tokamak for Energy Production (STEP) assuming tungsten main wall and tungsten divertor has been estimated with ERO at the inner and outer divertor, at the inner and outer midplane and at the outboard baffle entrance.
A. Kirschner, S.S. Henderson, S. Brezinsek, J. Romazanov, M. Kovari, C. Baumann, Ch. Linsmeier, E. Flynn, J. Hess, R.T. Osawa, S.L. Newton, D. Moulton, the STEP Team   +12 more
doaj   +1 more source

Comparison of ion cyclotron wall conditioning discharges in hydrogen and helium in JET

Nuclear Materials and Energy, 2023
This paper explores the plasma parameters of helium and hydrogen Ion Cyclotron Wall Conditioning (ICWC) discharges performed in JET as part of a He/H fuelling changeover experiment. The conducted study shows that plasma with a higher density is formed in
Y. Kovtun, T. Wauters, D. Matveev, R. Bisson, I. Jepu, S. Brezinsek, I. Coffey, E. Delabie, A. Boboc, T. Dittmar, A. Hakola, P. Jacquet, K. Kirov, E. Lerche, J. Likonen, E. Litherland-Smith, T. Loarer, P. Lomas, C. Lowry, E. Pawelec, C. Perez von Thun, A. Meigs, M. Maslov, I. Monakhov, C. Noble, S. Silburn, H. Sun, D. Taylor, E. Tsitrone, A. Widdowson, H. Sheikh, D. Douai   +31 more
doaj   +1 more source

Studies of the non-axisymmetric plasma boundary displacement in JET in presence of externally applied magnetic field

, 2015
Non-axisymmetric plasma boundary displacement is caused by the application of the external magnetic field with low toroidal mode number. Such displacement affects edge stability, power load on the first wall and could affect efficiency of the ICRH ...
Chapman, I.T., Kempenaars, M., Rimini, F.G., Kempenaars, M.,, Frassinetti, L., Rimini, F. G., Frassinetti, Lorenzo,, Yadykin, Dimitriy,, Delabie, E.,, Rimini, F.G.,, Frassinetti, L.,, Chapman, I.T.,, Yadykin, Dimitry,, Gerasimov, S., Delabie, E., Yadykin, D., Yadykin, Dimitriy, Chapman, I. T., Gerasimov, S.,   +18 more
core   +1 more source

Modelling of plasma-edge and plasma–wall interaction physics at JET with the metallic first-wall

, 2015
An overview is given on the recent progress on edge modelling activities for the JET ITER-like wall using the computational tools like the SOLPS or EDGE2D-EIRENE code.
Brezinsek, S., Wischmeier, M., Groth, M., Wiesen, Sven, Wiesen, S.   +4 more
core   +3 more sources

Lipopolysaccharide uptake is augmented in lipopolysaccharide‐tolerant mouse macrophage‐like cells via increased CD14 expression

FEBS Open Bio, EarlyView.
In normal (nontolerant) cells, CD14 is crucial for both LPS uptake and LPS signaling. In LPS‐tolerant cells, in which LPS‐induced TNF‐α and IFN‐β production is suppressed, there is a dramatic increase in surface CD14 expression. The overexpressed CD14 in LPS‐tolerant cells is responsible for the enhanced LPS uptake without inducing pro‐inflammatory ...
Saeka Nishihara, Takayuki Manabe, Mika Jouta, Kiyoshi Kawasaki   +3 more
wiley   +1 more source