Particle and energy balance in the SOL generated by a limiter in a RFP plasma

V. Antoni, M. Bagatin, D. Desideri, G. Serianni

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The plasma outer region of the RFP experiment ETA BETA II has been extensively investigate. In particular by an insertable graphite limiter, instrumented with thermocouples and Langmuir probes, the energy and particle fluxes in the shadow of the limiter have been measured at different insertions. The results are compared with those obtained by small-size calorimeter/Langmuir probes inserted to investigate, with fine space resolution, the outer region without limiter. Almost 80% of the power to the limiter is estimated to be carried by fast suprathermal electrons flowing along the magnetic field line direction. From an energy balance equation, applied in the SOL locally generated, the connection length of the limiter has been derived. Thus particle balance has been applied to determine the particle diffusion coefficient at the plasma edge. © 1992 Elsevier Science Publishers B.V. All rights reserved.
Original languageEnglish
Pages (from-to)577 - 580
Number of pages4
JournalJournal of Nuclear Materials
Issue numberC
Publication statusPublished - 1 Dec 1992
Externally publishedYes


All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics
  • Materials Science(all)
  • Nuclear Energy and Engineering

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