On scaling laws in scrape-off-layer plasmas

S. I. Itoh, K. Itoh

Research output: Contribution to journalArticlepeer-review

18 Citations (Scopus)


The scaling law in the scrape-off-layer (SOL) plasma is discussed, and the influence of the cross-field thermal conductivity, kappa , is analysed. Analyses are done for the edge temperature, temperature fall-off length and the fluctuation level. The dependencies on the heating power, edge density and safety factor are investigated. The scaling law of the thickness of the heat channel, which is crucial in evaluating the performance of the future large devices, depends on the model of kappa . It is found that the fluctuation level is most sensitive to the model of kappa . The importance of simultaneous observation on the temperature, gradient and fluctuation level is shown.

Original languageEnglish
Article number010
Pages (from-to)1845-1851
Number of pages7
JournalPlasma Physics and Controlled Fusion
Issue number11
Publication statusPublished - 1994

All Science Journal Classification (ASJC) codes

  • Nuclear Energy and Engineering
  • Condensed Matter Physics


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