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@ARTICLE{Mller:890596,
author = {Möller, S. and Ding, R. and Xie, Hai and Gao, B. F. and
Wang, B. G. and Peng, Jiao and Liu, S. C. and Gao, W. and
Kirschner, A. and Brezinsek, S.},
title = {{S}ymmetries of 13{C} tracer deposition in {EAST} {D} and
{H}e plasmas investigated on the sub-mm to 100 mm scale by
deuteron nuclear reaction analysis},
journal = {Fusion engineering and design},
volume = {166},
issn = {0920-3796},
address = {New York, NY [u.a.]},
publisher = {Elsevier},
reportid = {FZJ-2021-01062},
pages = {112292 -},
year = {2021},
abstract = {In continuation of an earlier study, this work focusses on
deposit analysis in the mm region around the tracer
injection hole of two 13CD4 injection experiments in EAST by
using focussed 1.43 MeV deuteron ion beam analysis. This
study adds ∼1500 data points to the former work on the
same samples to assess more details on deposition patterns
and symmetry and test the accuracy of former
extrapolations.Mapping of the 13CD4 injection-hole vicinity
using 0.2 mm lateral resolution yields compatible results as
the former 1.8 mm resolution for the local co-deposit
thickness. The new data reveal the deposition maximum to be
1 ± 0.2 mm away from the injection hole towards the ExB
direction, resembling the triangular shape also seen on the
larger scale. The analysis of 3 blocks along the magnetic
field vector shows a dominant deposition along the surface
area closest to the last closed flux surface. An edge with a
factor ∼11 drop in deposit thickness within 2 mm spans
here along the whole 150 mm tile size and along the axis of
the magnetic field. The analysis using proton backscattering
shows no He retention in the He plasma exposed co-deposits
above the 1 $\%$ limit of detection.The total deposited 13C
amount was underestimated by ∼5 $\%$ in the former study,
a value not exceeding the measurement uncertainty. The
combination of ∼0.2 mm spatial resolution around the
injection-hole and at the deposit edge with ∼ 2 mm
resolution but larger coverage outside these regions is
found to provide a reasonable compromise of information
quality and analysis effort.},
cin = {IEK-4 / IEK-1},
ddc = {530},
cid = {I:(DE-Juel1)IEK-4-20101013 / I:(DE-Juel1)IEK-1-20101013},
pnm = {134 - Plasma-Wand-Wechselwirkung (POF4-134)},
pid = {G:(DE-HGF)POF4-134},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000640897000002},
doi = {10.1016/j.fusengdes.2021.112292},
url = {https://juser.fz-juelich.de/record/890596},
}