Neoclassical radial electric field and ion heat flux in the presence of the transport barrier

Timo Kiviniemi (Corresponding Author), Jukka Heikkinen, A. Peeters

Research output: Contribution to journalArticleScientificpeer-review

9 Citations (Scopus)

Abstract

The ambipolar radial electric field and ion heat flux in the presence of this field are studied using Monte Carlo guiding centre orbit following code ASCOT. These are studied as a function of temperature gradient in different collisionality regimes. Good agreement with the analytic theory is found for heat fluxes in plateau and banana regimes but in Pfirsch‐Schlüter regime sub‐neoclassical heat flux is found for steep temperature gradients. For radial electric field, deviations from analytic theory are significant.
Original languageEnglish
Pages (from-to)236-240
JournalContributions to Plasma Physics
Volume42
Issue number2-4
DOIs
Publication statusPublished - 2002
MoE publication typeA1 Journal article-refereed

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heat flux
electric fields
temperature gradients
ions
plateaus
orbits
deviation

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Kiviniemi, Timo ; Heikkinen, Jukka ; Peeters, A. / Neoclassical radial electric field and ion heat flux in the presence of the transport barrier. In: Contributions to Plasma Physics. 2002 ; Vol. 42, No. 2-4. pp. 236-240.
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Neoclassical radial electric field and ion heat flux in the presence of the transport barrier. / Kiviniemi, Timo (Corresponding Author); Heikkinen, Jukka; Peeters, A.

In: Contributions to Plasma Physics, Vol. 42, No. 2-4, 2002, p. 236-240.

Research output: Contribution to journalArticleScientificpeer-review

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AU - Heikkinen, Jukka

AU - Peeters, A.

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AB - The ambipolar radial electric field and ion heat flux in the presence of this field are studied using Monte Carlo guiding centre orbit following code ASCOT. These are studied as a function of temperature gradient in different collisionality regimes. Good agreement with the analytic theory is found for heat fluxes in plateau and banana regimes but in Pfirsch‐Schlüter regime sub‐neoclassical heat flux is found for steep temperature gradients. For radial electric field, deviations from analytic theory are significant.

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