Preceding propagation of turbulence pulses at avalanche events in a magnetically confined plasma.
Journal
Scientific reports
ISSN: 2045-2322
Titre abrégé: Sci Rep
Pays: England
ID NLM: 101563288
Informations de publication
Date de publication:
16 May 2022
16 May 2022
Historique:
received:
01
12
2021
accepted:
11
04
2022
entrez:
16
5
2022
pubmed:
17
5
2022
medline:
17
5
2022
Statut:
epublish
Résumé
The preceding propagation of turbulence pulses has been observed for the first time in heat avalanche events during the collapse of the electron internal transport barrier (e-ITB) in the Large Helical Device. The turbulence and heat pulses are generated near the foot of the e-ITB and propagate to the peripheral region within a much shorter time than the diffusion timescale. The propagation speed of the turbulence pulse is approximately 10 km/s, which is faster than that of the heat pulse propagating at a speed of 1.5 km/s. The heat pulse propagates at approximately the same speed as that in the theoretical prediction, whereas the turbulence pulse propagates one order of magnitude faster than that in the prediction, thereby providing important insights into the physics of non-local transport.
Identifiants
pubmed: 35577787
doi: 10.1038/s41598-022-10499-z
pii: 10.1038/s41598-022-10499-z
pmc: PMC9110360
doi:
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
6979Subventions
Organisme : Japan Society for the Promotion of Science
ID : 18K13525
Organisme : Japan Society for the Promotion of Science
ID : 19KK0073
Organisme : Japan Society for the Promotion of Science
ID : 21K13901
Informations de copyright
© 2022. The Author(s).
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