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Fokker‐Planck Simulation of Electron Transport in SOL Plasmas with ALLA Code
Author(s) -
Batishcheva A. A.,
Batishchev O. V.,
Krasheninnikov S. I.,
Sigmar D. J.,
Shoucri M. M.,
Shkarofsky I. P.
Publication year - 1996
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/ctpp.2150360225
Subject(s) - tokamak , plasma , physics , electron , computational physics , distribution function , fokker–planck equation , magnetic field , atomic physics , space (punctuation) , nuclear physics , quantum mechanics , computer science , differential equation , operating system
The recently developed Fokker‐Planck code ALLA [1] permits us to simulate the temporal evolution collisional edge plasmas in 1D in space, IV in velocity space. It was used to simulate the SOL parallel electron flow in Alcator C‐Mod (PFC MIT) and TdeV (CCFM) tokamaks. Plasma parameters are taken as „best guesses” from available detachment experimental data [2,3]. We show that the actual electron distribution function is asymmetric in the direction parallel to the magnetic field and its tail starts to departure from the Maxwellian at energies around 2 T . This feature can substantially affect probe measurements and modify reaction rates and plasma transport properties.