Results 211 to 220 of about 3,588 (251)
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Plasma-wall interaction in flashtubes
Journal of Physics D: Applied Physics, 1979A quasi-stationary arc has been established in a flashtube filled with a rare gas. The current intensity was varied in the range 1-3 kA and the arc lasted about 1 ms. The plasma parameters were determined spectroscopically and are typically Ne approximately 1018 cm-3 and T approximately 1 eV. This allows the study of non-ideal plasma effects.
Y Vitel +3 more
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Reduction of plasma-wall interaction by plasma biasing
Journal of Nuclear Materials, 1990Abstract Negative and positive biases of up to 225 V and 125 ms duration have been applied to the main limiter during steady discharges in the TdeV tokamak. We focus on recycling, impurity influx and plasma purity, as measured by mass spectrometry, line emission of low ionisation states and bremsstrahlung emission.
P. Couture +7 more
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Nuclear Fusion, 1977
This international symposium was organized by the Kernforschungsanlage, Julich GmbH, co-sponsored by the Commission of European Communities (EURATOM) and attended by about 150 participants. Seventeen invited papers and about 69 contributed papers were presented, covering six topics.
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This international symposium was organized by the Kernforschungsanlage, Julich GmbH, co-sponsored by the Commission of European Communities (EURATOM) and attended by about 150 participants. Seventeen invited papers and about 69 contributed papers were presented, covering six topics.
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Plasma performance and plasma-wall interaction in TEXTOR
Nuclear Fusion, 1985The performance of the TEXTOR tokamak, as manifested by its density limit, confinement time, behaviour of density and current density profiles, and impurity level, is described. By means of ICRH heating, powers significantly above the Ohmic one are obtained. The deposition of thin carbon layers onto all inner surfaces is shown to be an effective method
J. SchlüTer, V.P. Bhatnagar
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Plasma wall interactions in ITER
Physica Scripta, 2006Designing the interface between a thermonuclear plasma and the solid material environment is arguably one of the highest technical challenges of ITER and of the successful development of future fusion power reactors. Carbon-based materials are recognized to have superior thermomechanical properties and do not melt, but they retain high levels of ...
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Vlasov simulations of plasma-wall interactions in a weakly collisional plasma
Computer Physics Communications, 2004zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Giovanni Manfredi 0001, Fabrice Valsaque
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Plasma Wall Interactions in Heated Plasmas
1986With the development of larger, more powerful magnetic confinement devices, the study of plasma-wall interactions becomes increasingly relevant to the controlled thermonuclear fusion program. To increase the plasma temperature in Tokamaks from the value reached by ohmic heating (1 – 2 keV), toward the value necessary for self sustaining fusion ...
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Models of Plasma Wall Interactions
1991Impurity control is a major issue for controlled fusion research. The leading concept for obtaining the conditions for controlled fusion (using magnetic fields) is the tokamak. This paper will discuss models for impurity control in the context of applications for the tokamak. The fusion reaction (e.g.
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The plasma shield in ITER plasma wall interactions
1997In evaluating the lifetime of ITER plasma facing components (PFC) against not normal heat loads credit is taken from the existence of a plasma shield which effectively protects the wall from excessive evaporation. The plasma shield formed from vaporized PFC material though beneficial for the PFC could become a potential threat for the tokamak because ...
Würz, H. +5 more
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Plasma Contamination Due to Plasma-Wall Interaction
Physica Scripta, 1981In present day fusion devices the interaction of the hot plasma with the first wall and limiter causes a severe plasma contamination which increases the energy losses by impurity radiation. Three main impurity sources have been identified: arcing, sputtering and evaporation.
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