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dc.contributor.authorLosada, Juan Manuel
dc.contributor.authorPaikina, Olga
dc.contributor.authorGarcia, Odd Erik
dc.date.accessioned2024-10-03T08:40:31Z
dc.date.available2024-10-03T08:40:31Z
dc.date.issued2024-04-19
dc.description.abstractA stochastic model for a superposition of uncorrelated pulses with a random distribution of amplitudes, sizes, and velocities is analyzed. The pulses are assumed to move radially with fixed shape and amplitudes decreasing exponentially in time due to linear damping. The pulse velocities are taken to be time-independent but randomly distributed. The implications of a broad distribution of pulse amplitudes and velocities, as well as correlations between these, are investigated. Fast and large-amplitude pulses lead to flattened average radial profiles with order unity relative fluctuations in the scrape-off layer. For theoretically predicted blob velocity scaling relations, the stochastic model reveals average radial profiles similar to the case of a degenerate distribution of pulse velocities but with more intermittent fluctuations. The profile e-folding length is given by the product of the average pulse velocity and the linear damping time due to losses along magnetic field lines. The model describes numerous common features from experimental measurements and underlines the role of large-amplitude fluctuations for plasma–wall interactions in magnetically confined fusion plasmas.en_US
dc.identifier.citationLosada, Paikina, Garcia. Stochastic modeling of blob-like plasma filaments in the scrape-off layer: Correlated amplitudes and velocities. Physics of Plasmas. 2024;31(4)en_US
dc.identifier.cristinIDFRIDAID 2266727
dc.identifier.doi10.1063/5.0196938
dc.identifier.issn1070-664X
dc.identifier.issn1089-7674
dc.identifier.urihttps://hdl.handle.net/10037/34996
dc.language.isoengen_US
dc.publisherAIP Publishingen_US
dc.relation.journalPhysics of Plasmas
dc.rights.accessRightsopenAccessen_US
dc.rights.holderCopyright 2024 The Author(s)en_US
dc.rights.urihttps://creativecommons.org/licenses/by/4.0en_US
dc.rightsAttribution 4.0 International (CC BY 4.0)en_US
dc.titleStochastic modeling of blob-like plasma filaments in the scrape-off layer: Correlated amplitudes and velocitiesen_US
dc.type.versionpublishedVersionen_US
dc.typeJournal articleen_US
dc.typeTidsskriftartikkelen_US
dc.typePeer revieweden_US


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Attribution 4.0 International (CC BY 4.0)
Except where otherwise noted, this item's license is described as Attribution 4.0 International (CC BY 4.0)