TY  - RPRT
AU  - Kögler, U.
AU  - Winter, J.
TI  - ERO -TEXTOR   3D MonteCarlo Code for Local Impurity-Modeling in the Scrape-Off-Layer of TEXTOR Version 2.0
VL  - 3361
IS  - Juel-3361
CY  - Jülich
PB  - Forschungszentrum Jülich GmbH Zentralbibliothek, Verlag
M1  - PreJuSER-136334
M1  - Juel-3361
T2  - Berichte des Forschungszentrums Jülich
SP  - III, 159 S.
PY  - 1997
N1  - Record converted from JUWEL: 18.07.2013
AB  - The ERO-TEXTOR code is described in detail. The code solves the kinetic equations of impurities
AB  - in the scrape-off layer of a tokamak plasma in the vicinity of material surfaces like limiters
AB  - or divertors. A relaxation time ansatz in the traced impurity limit is chosen, taking the gyromotion
AB  - of the particles into account. Since the background plasma is slightly non-maxwellian at
AB  - the plasma edge higher order corrections (thermal [orces) to the relaxation time ansatz are also
AB  - considered. Background plasma parameters are calculated from a simple plasma model, i.e. the
AB  - one dimensional continuity and moment um equations are used to derive the local electron density,
AB  - the local fiow velo city and the pre-sheath and sheath electric fields. Since these calculations
AB  - are not done in a selfconsistent way, the measured values of electron density and temperature
AB  - are used as basic input to derive the dependency of these quantities. The regarded magnetic
AB  - topology is still straight and uniform.
AB  - Also detailed account is given to the plasma surface inter action and the erosion/deposition
AB  - processes. A linear differential equation model for multi species impact on a material surface
AB  - has been developed and is used in a discrete time step approximation.
AB  - External databases include the ionization rates for atomic species, molecular pro ces ses of methane
AB  - and silane molecules and the sputtering and refiection yields, which are taken from binary collisi
AB  - on calculation codes (e.g. TRIM) or from semi-empirical fits (e.g. the Bodhansky and Yamamura
AB  - fits).
LB  - PUB:(DE-HGF)29
UR  - https://juser.fz-juelich.de/record/136334
ER  -