Evidence of a thermo-diffusion pinch on particle transport in FTU discharges close to density limit

O. Tudisco, C. Meineri, G. Apruzzese, O. D'Arcangelo, E. Giovannozzi, M. Marinucci, C. Mazzotta, G. Pucella

Research output: Contribution to journalArticle

Abstract

In FTU, the density profile in the presence of large MARFE becomes more and more peaked with increasing density, forming strong density gradients close to the radial region affected by the MARFE. The temperature at the edge drops to few eV, driving a drop of the whole profile. The estimated particle source cannot justify the change of the density gradient, which instead is well-explained by a change of the pinch. A thermo-diffusion term well-describes the pinch evolution and the experimental behavior of the density at those radii where temperature measurements are reliable.
Original languageEnglish
Pages (from-to)622 - 626
Number of pages5
JournalNuclear Materials and Energy
Volume12
DOIs
Publication statusPublished - 1 Aug 2017
Externally publishedYes

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All Science Journal Classification (ASJC) codes

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

Cite this

Tudisco, O., Meineri, C., Apruzzese, G., D'Arcangelo, O., Giovannozzi, E., Marinucci, M., ... Pucella, G. (2017). Evidence of a thermo-diffusion pinch on particle transport in FTU discharges close to density limit. Nuclear Materials and Energy, 12, 622 - 626. https://doi.org/10.1016/j.nme.2017.03.026