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dc.contributor.authorGarcia, Odd Erik
dc.contributor.authorTheodorsen, Audun
dc.date.accessioned2019-03-05T09:57:48Z
dc.date.available2019-03-05T09:57:48Z
dc.date.issued2018-01-18
dc.description.abstractFrequency power spectra due to a super-position of uncorrelated Lorentzian pulses with a random distribution of amplitudes are considered. For pulses with a constant duration, there is an exponential frequency spectrum which is independent of the degree of pulse overlap and the pulse amplitude distribution. The spectrum is furthermore shown to be unaffected by skewness of the Lorentzian pulses and even a random distribution of the pulse asymmetry parameter and its correlation with the pulse amplitude. This stochastic model provides new insight into the ubiquitous exponential spectra in fluids and magnetized plasmas exhibiting deterministic chaos, where non-linear advection processes lead to amplitude dependent steepening of smooth pulses.en_US
dc.descriptionThis article may be downloaded for personal use only. Any other use requires prior permission of the author and AIP Publishing. This article appeared in (citation of published article) and may be found at: <a href=http://doi.org/10.1063/1.5004811> http://doi.org/10.1063/1.5004811 </a>.en_US
dc.identifier.citationGarcia, O. E. & Theodorsen, A. (2018). Skewed Lorentzian pulses and exponential frequency power spectra. <i>Physics of Plasmas, 25</i>(1). http://doi.org/10.1063/1.500481en_US
dc.identifier.cristinIDFRIDAID 1583045
dc.identifier.doi10.1063/1.5004811
dc.identifier.issn1070-664X
dc.identifier.issn1089-7674
dc.identifier.urihttps://hdl.handle.net/10037/14837
dc.language.isoengen_US
dc.publisherAIPen_US
dc.relation.journalPhysics of Plasmas
dc.relation.projectIDinfo:eu-repo/grantAgreement/RCN/FRINATEK/240510/Norway/Turbulence and transport at the boundary of fusion plasmas//en_US
dc.rights.accessRightsopenAccessen_US
dc.subjectVDP::Mathematics and natural science: 400::Physics: 430::Space and plasma physics: 437en_US
dc.subjectVDP::Matematikk og Naturvitenskap: 400::Fysikk: 430::Rom- og plasmafysikk: 437en_US
dc.titleSkewed Lorentzian pulses and exponential frequency power spectraen_US
dc.typeJournal articleen_US
dc.typeTidsskriftartikkelen_US
dc.typePeer revieweden_US


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