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@ARTICLE{Reimer:837021,
author = {Reimer, R. and Marchuk, O. and Geiger, B. and Mc Carthy, P.
J. and Dunne, M. and Hobirk, J. and Wolf, R.},
title = {{I}nfluence of non-local thermodynamic equilibrium and
{Z}eeman effects on magnetic equilibrium reconstruction
using spectral motional {S}tark effect diagnostic},
journal = {Review of scientific instruments},
volume = {88},
number = {8},
issn = {1089-7623},
address = {[S.l.]},
publisher = {American Institute of Physics},
reportid = {FZJ-2017-06037},
pages = {083509},
year = {2017},
abstract = {The Motional Stark Effect (MSE) diagnostic is a well
established technique to infer the local internal magnetic
field in fusion plasmas. In this paper, the existing forward
model which describes the MSE data is extended by the Zeeman
effect, fine-structure, and relativistic corrections in the
interpretation of the MSE spectra for different experimental
conditions at the tokamak ASDEX Upgrade. The contribution of
the non-Local Thermodynamic Equilibrium (non-LTE)
populations among the magnetic sub-levels and the Zeeman
effect on the derived plasma parameters is different. The
obtained pitch angle is changed by 3°…4° and by
0.5°…1° including the non-LTE and the Zeeman effects
into the standard statistical MSE model. The total
correction is about 4°. Moreover, the variation of the
magnetic field strength is significantly changed by $2.2\%$
due to the Zeeman effect only. While the data on the derived
pitch angle still could not be tested against the other
diagnostics, the results from an equilibrium reconstruction
solver confirm the obtained values for magnetic field
strength.},
cin = {IEK-4},
ddc = {530},
cid = {I:(DE-Juel1)IEK-4-20101013},
pnm = {174 - Plasma-Wall-Interaction (POF3-174)},
pid = {G:(DE-HGF)POF3-174},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000409178100033},
doi = {10.1063/1.4994889},
url = {https://juser.fz-juelich.de/record/837021},
}