%0 Report
%A Kögler, U.
%A Winter, J.
%T ERO -TEXTOR   3D MonteCarlo Code for Local Impurity-Modeling in the Scrape-Off-Layer of TEXTOR Version 2.0
%V 3361
%N Juel-3361
%C Jülich
%I Forschungszentrum Jülich GmbH Zentralbibliothek, Verlag
%M PreJuSER-136334
%M Juel-3361
%B Berichte des Forschungszentrums Jülich
%P III, 159 S.
%D 1997
%Z Record converted from JUWEL: 18.07.2013
%X The ERO-TEXTOR code is described in detail. The code solves the kinetic equations of impurities
%X in the scrape-off layer of a tokamak plasma in the vicinity of material surfaces like limiters
%X or divertors. A relaxation time ansatz in the traced impurity limit is chosen, taking the gyromotion
%X of the particles into account. Since the background plasma is slightly non-maxwellian at
%X the plasma edge higher order corrections (thermal [orces) to the relaxation time ansatz are also
%X considered. Background plasma parameters are calculated from a simple plasma model, i.e. the
%X one dimensional continuity and moment um equations are used to derive the local electron density,
%X the local fiow velo city and the pre-sheath and sheath electric fields. Since these calculations
%X are not done in a selfconsistent way, the measured values of electron density and temperature
%X are used as basic input to derive the dependency of these quantities. The regarded magnetic
%X topology is still straight and uniform.
%X Also detailed account is given to the plasma surface inter action and the erosion/deposition
%X processes. A linear differential equation model for multi species impact on a material surface
%X has been developed and is used in a discrete time step approximation.
%X External databases include the ionization rates for atomic species, molecular pro ces ses of methane
%X and silane molecules and the sputtering and refiection yields, which are taken from binary collisi
%X on calculation codes (e.g. TRIM) or from semi-empirical fits (e.g. the Bodhansky and Yamamura
%X fits).
%F PUB:(DE-HGF)29
%9 Report
%U https://juser.fz-juelich.de/record/136334