<div class="csl-bib-body">
<div class="csl-entry">Cavedon, M., Pütterich, T., Viezzer, E., Laggner, F., Burckhart, A., Dunne, M., Fischer, R., Lebschy, A., Mink, F., Stroth, U., Willensdorfer, M., & Wolfrum, E. (2017). Pedestal and Eᵣ profile evolution during an edge localized mode cycle at ASDEX Upgrade. <i>Plasma Physics and Controlled Fusion</i>, <i>59</i>(10), Article 105007. https://doi.org/10.1088/1361-6587/aa7ad0</div>
</div>
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dc.identifier.issn
0741-3335
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dc.identifier.uri
http://hdl.handle.net/20.500.12708/146740
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dc.description.abstract
The upgrade of the edge charge exchange recombination spectroscopy diagnostic at ASDEX
Upgrade has enabled highly spatially resolved measurements of the impurity ion dynamics during an
edge-localized mode cycle (ELM) with unprecedented temporal resolution, i.e. 65 μs. The increase of
transport during an ELM induces a relaxation of the ion, electron edge gradients in impurity density
and flows. Detailed characterization of the recovery of the edge temperature gradients reveals a
difference in the ion and electron channel: the maximum ion temperature gradient Ti is
re-established on similar timescales as ne, which is faster than the recovery of Te. After the
clamping of the maximum gradient, Ti and Te at the pedestal top continue to rise up to the next ELM
while ne stays constant which means that the temperature pedestal and the resulting pedestal pressure
widen until the next ELM. The edge radial electric field Er at the ELM crash is found to reduce to
typical L-mode values and its maximum recovers to its pre-ELM conditions on a similar time scale as
for ne and Ti. Within the uncertainties, the measurements of Er align with their neoclassical
predictions Er,neo for most of the ELM cycle, thus indicating that Er is dominated by collisional
processes. However, between 2 and 4ms after the ELM crash, other contributions to E ' B flow,
e.g. zonal flows or ion orbit effects, could not be excluded within the uncertainties.
en
dc.language.iso
en
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dc.publisher
IOP PUBLISHING LTD
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dc.relation.ispartof
Plasma Physics and Controlled Fusion
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dc.subject
Condensed Matter Physics
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dc.subject
Nuclear Energy and Engineering
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dc.subject
edge localized mode
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dc.subject
ion temperature
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dc.subject
edge gradient recovery
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dc.subject
radial electric field
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dc.title
Pedestal and Eᵣ profile evolution during an edge localized mode cycle at ASDEX Upgrade
en
dc.type
Artikel
de
dc.type
Article
en
dc.type.category
Original Research Article
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tuw.container.volume
59
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tuw.container.issue
10
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tuw.journal.peerreviewed
true
-
tuw.peerreviewed
true
-
wb.publication.intCoWork
International Co-publication
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tuw.researchTopic.id
M2
-
tuw.researchTopic.name
Materials Characterization
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tuw.researchTopic.value
100
-
dcterms.isPartOf.title
Plasma Physics and Controlled Fusion
-
tuw.publication.orgunit
E134-03 - Forschungsbereich Atomic and Plasma Physics
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tuw.publisher.doi
10.1088/1361-6587/aa7ad0
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dc.identifier.articleid
105007
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dc.identifier.eissn
1361-6587
-
dc.description.numberOfPages
8
-
tuw.author.orcid
0000-0003-1601-2973
-
wb.sci
true
-
wb.sciencebranch
Physik, Astronomie
-
wb.sciencebranch.oefos
1030
-
wb.facultyfocus
Physikalische Technologie
de
wb.facultyfocus
Physical Technology
en
wb.facultyfocus.faculty
E130
-
item.grantfulltext
none
-
item.openairetype
research article
-
item.fulltext
no Fulltext
-
item.languageiso639-1
en
-
item.openairecristype
http://purl.org/coar/resource_type/c_2df8fbb1
-
item.cerifentitytype
Publications
-
crisitem.author.dept
University of Milano-Bicocca
-
crisitem.author.dept
E134 - Institut für Angewandte Physik
-
crisitem.author.dept
Max Planck Institute for Plasma Physics, Garching, Germany
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crisitem.author.dept
Max Planck Institute for Plasma Physics, Garching, Germany