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Dust: A new challenge in nuclear fusion research?

Phys. Plasmas 7, 3862 (2000); doi:10.1063/1.1288911

Issue Date: October 2000

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J. Winter
Institut für Experimentalphysik II, Ruhr-Universität Bochum, D 44780 Bochum, Germany
Small particles (dust) exist in magnetic confinement fusion devices. Their origin is due to plasma–surface interactions. Dust particles may contain significant amounts of hydrogen isotopes, 50% of which will be tritium in future devices. It is important to assess and understand the processes by which dust is formed and by which it interacts with the fusion device and its plasma. Dust may be a safety hazard due to its high chemical reactivity and due to the mobile tritium inventory. Dust may influence the plasma performance and the operation of fusion devices. The radioactive decay of tritium incorporated into carbonaceous dust may lead to its charging and to the formation of a nuclear induced plasma associated with levitation and transport of dust inside the vacuum vessel. Some important aspects of dust in fusion devices will be discussed, making use of information from the area of plasma–surface interactions in fusion devices and from the field of dusty plasma research. ©2000 American Institute of Physics.
History: Received 20 December 1999; accepted 28 February 2000
Permalink: http://link.aip.org/link/?PHPAEN/7/3862/1

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KEYWORDS and PACS

Keywords
PACS
  • 52.25.Zb
    Physics of plasmas and electric discharges Plasma properties Dusty plasmas; plasma crystals
  • 52.55.Pi
    Physics of plasmas and electric discharges Magnetic confinement and equilibrium Fusion products effects (e.g., alpha-particles, etc.)
  • 52.40.Hf
    Physics of plasmas and electric discharges Plasma interactions Plasma–wall interactions; boundary layer effects; plasma sheaths
  • 52.25.Vy
    Physics of plasmas and electric discharges Plasma properties Impurities in plasmas
  • 28.52.Nh
    Nuclear engineering and nuclear power studies Fusion reactors Safety
  • 52.25.Fi
    Physics of plasmas and electric discharges Plasma properties Transport properties
  • YEAR: 2000

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PUBLICATION DATA

ISSN:
1070-664X (print)   1089-7674 (online)
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