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@ARTICLE{Han:904049,
author = {Han, X. and Krämer-Flecken, A. and Xiang, H. M. and
Vécsei, M. and Knieps, A. and Windisch, T. and Anda, G. and
Andreeva, T. and Bozhenkov, S. A. and Geiger, J. and Dunai,
D. and Trier, E. and Rahbarnia, K. and Zoletnik, S. and
Liang, Y. and W7-X Team, the},
title = {{A}pplication of the elliptic approximation model for the
edge turbulence rotation measurement via the poloidal
correlation reflectometer in {W}endelstein 7-{X}},
journal = {Nuclear fusion},
volume = {61},
number = {6},
issn = {0029-5515},
address = {Vienna},
publisher = {IAEA},
reportid = {FZJ-2021-05619},
pages = {066029 -},
year = {2021},
note = {kein Zugriff auf Postprint},
abstract = {The perpendicular velocity (v⊥) of turbulence is measured
by means of a hopping poloidal correlation reflectometer
diagnostic for the study of turbulence rotation in the
plasma edge region in Wendelstein 7-X. An elliptic
approximation (EA) model is applied for calculating the
space-time correlation in the edge region. The v⊥ profile
is compared in the high-ι (edge ι ≈ 1.2) and limiter
(edge ι < 1) configurations. It is found that the v⊥
gradient is inversely proportional to the heating power in
the high-ι configuration, which could be attributed to the
turbulence activities in the plasma edge. In the limiter
configuration, the v⊥ spike is observed near the island
boundary, which is corresponded to the plasma current crash.
In the standard configuration (edge ι ≈ 1), the v⊥
profile in the island region distributes as a function of
the perpendicular separation. With increasing of the plasma
current, the island enlarges the size as is referred from
the v⊥ scope, accompanying with steepening of the v⊥
gradient at the boundary of the island.},
cin = {IEK-4},
ddc = {620},
cid = {I:(DE-Juel1)IEK-4-20101013},
pnm = {134 - Plasma-Wand-Wechselwirkung (POF4-134)},
pid = {G:(DE-HGF)POF4-134},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000655413400001},
doi = {10.1088/1741-4326/abfb15},
url = {https://juser.fz-juelich.de/record/904049},
}