Fast electron confinement during lower hybrid experiments in ASDEX

R. Bartiromo, E. Barbato, L. Gabellieri, A. Spaziani, A.A. Tuccillo, F. Leuterer, F.X. Soldner, O. Gehre, H.D. Murmann

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Abstract

A detailed analysis is presented of experimental data on the energy content in the fast electron population created by lower hybrid waves in the ASDEX tokamak and it is shown that in most circumstances direct losses due to diffusion of these electrons can be neglected. The value of the fast electron diffusion coefficient is inferred from the time behaviour of hard X-ray emission during power modulation experiments. It turns out that fast electrons are better confined than thermal electrons. This experimental result is compared with a theoretical prediction based on transport driven by electrostatic or magnetic turbulence.
Original languageEnglish
Article numberI07
Pages (from-to)1483 - 1492
Number of pages10
JournalNuclear Fusion
Volume33
Issue number10
DOIs
Publication statusPublished - 1993
Externally publishedYes

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All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics
  • Condensed Matter Physics

Cite this

Bartiromo, R., Barbato, E., Gabellieri, L., Spaziani, A., Tuccillo, A. A., Leuterer, F., ... Murmann, H. D. (1993). Fast electron confinement during lower hybrid experiments in ASDEX. Nuclear Fusion, 33(10), 1483 - 1492. [I07]. https://doi.org/10.1088/0029-5515/33/10/I07