Premium
Neoclassical Radial Electric Field and Ion Heat Flux in the Presence of the Transport Barrier
Author(s) -
Kiviniemi T.P.,
Heikkinen J.A.,
Peeters A.G.
Publication year - 2002
Publication title -
contributions to plasma physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.531
H-Index - 47
eISSN - 1521-3986
pISSN - 0863-1042
DOI - 10.1002/1521-3986(200204)42:2/4<236::aid-ctpp236>3.0.co;2-x
Subject(s) - collisionality , ambipolar diffusion , electric field , physics , heat flux , flux (metallurgy) , ion , field (mathematics) , temperature gradient , plasma , mechanics , condensed matter physics , quantum electrodynamics , tokamak , materials science , heat transfer , nuclear physics , meteorology , quantum mechanics , pure mathematics , metallurgy , mathematics
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.