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@ARTICLE{Sergienko:838754,
author = {Sergienko, G. and Esser, H. G. and Kirschner, A. and Huber,
A. and Freisinger, M. and Brezinsek, S. and Widdowson, A.
and Ayres, Ch. and Weckmann, A. and Heinola, K.},
title = {{Q}uartz micro-balance results of pulse-resolved
erosion/deposition in the {JET}-{ILW} divertor},
journal = {Nuclear materials and energy},
volume = {12},
issn = {2352-1791},
address = {Amsterdam [u.a.]},
publisher = {Elsevier},
reportid = {FZJ-2017-07291},
pages = {478-482},
year = {2017},
abstract = {A set of quartz crystal microbalances (QMB) was used at JET
with full carbon wall to monitor mass erosion/deposition
rates in the remote areas of the divertor. After
introduction of the ITER- like wall (ILW) in JET with
beryllium main wall and tungsten divertor, strong reduction
of the material deposition and accompanied fuel retention
was observed. Therefore the existing QMB electronics have
been modified to improve the accuracy of frequency
measurements by a factor of ten down to 0.1 Hz which
corresponds to 1.4 ng cm−2. The averaged deposition rates
of 1.2–3 ng cm−2 s−1 and erosion rates of 5.6–8.1 ng
cm−2 s−1 were observed in the inner divertor of JET -ILW
with the inner strike point positions close to the bottom
edge of vertical tile 3 and at the horizontal tile 4
respectively. The erosion with averaged rates of ≈2.1 ng
cm−2 s−1 and ≈120 ng cm−2 s−1 were observed in the
outer divertor for the outer strike point positions at tile
5 and tile 6 respectively.},
cin = {IEK-4},
ddc = {333.7},
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:000417293300074},
doi = {10.1016/j.nme.2017.03.007},
url = {https://juser.fz-juelich.de/record/838754},
}