Divertor conditions relevant for fusion reactors achieved with linear plasma generator

Intense magnetized hydrogen and deuterium plasmas have been produced with electron densities up to 3.6 × 1020 m−3 and electron temperatures up to 3.7 eV with a linear plasma generator. Exposure of a W target has led to average heat and particle flux densities well in excess of 4 MW m−2 and 1024 m−2...

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Bibliographic Details
Published in:Applied physics letters 2012-11, Vol.101 (22)
Main Authors: van Eck, H. J. N., Kleyn, A. W., Lof, A., van der Meiden, H. J., van Rooij, G. J., Scholten, J., Zeijlmans van Emmichoven, P. A.
Format: Article
Language:English
Subjects:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY
CONFINEMENT
DEUTERIUM
Deuterium plasma
DIVERTORS
EFFICIENCY
ELECTRON DENSITY
ELECTRON TEMPERATURE
EV RANGE
FLUX DENSITY
Fusion reactors
HEAT
HYDROGEN
INTERACTIONS
ION TEMPERATURE
ITER TOKAMAK
Particle flux density
PARTICLES
PLASMA
PLASMA DENSITY
Plasma generators
Strikes
SURFACES
WALL EFFECTS
ZONES
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Summary:Intense magnetized hydrogen and deuterium plasmas have been produced with electron densities up to 3.6 × 1020 m−3 and electron temperatures up to 3.7 eV with a linear plasma generator. Exposure of a W target has led to average heat and particle flux densities well in excess of 4 MW m−2 and 1024 m−2 s−1, respectively. We have shown that the plasma surface interactions are dominated by the incoming ions. The achieved conditions correspond very well to the projected conditions at the divertor strike zones of fusion reactors such as ITER. In addition, the machine has an unprecedented high gas efficiency.
ISSN:0003-6951
1077-3118
DOI:10.1063/1.4768302