On the fundamental relation of laser schlieren deflectometry for temperature measurements in filamentary plasmas
dc.bibliographicCitation.firstPage | 20804 | eng |
dc.bibliographicCitation.issue | 2 | eng |
dc.bibliographicCitation.journalTitle | The European physical journal : EPJ : Applied physics | eng |
dc.bibliographicCitation.volume | 71 | eng |
dc.contributor.author | Schäfer, Jan | |
dc.contributor.author | Bonaventura, Zdeněk | |
dc.contributor.author | Foest, Rüdiger | |
dc.date.accessioned | 2022-06-30T10:23:54Z | |
dc.date.available | 2022-06-30T10:23:54Z | |
dc.date.issued | 2015 | |
dc.description.abstract | Recently, laser schlieren deflectometry (LSD) had been successfully employed as a temperature measurement method to reveal the heat convection generated by micro filaments of a self-organized non-thermal atmospheric plasma jet. Based on the theory of the temperature measurements using LSD, in this work, three approaches for an application of the method are introduced: (i) a hyperbolic-like model of refractive index is applied which allows an analytical theory for the evaluation of the deflection angle to be developed, (ii) a Gaussian shape model for the filament temperature is implemented which is analyzed numerically and (iii) an experimental calibration of the laser deflection with a gas mixture of helium and argon is performed. Thus, these approaches demonstrate that a universal relation between the relative maximum temperature of the filament core (T1/T0) and a the maximum deflection angle δ1 of the laser beam can be written as T1/T0=(1 − δ1/δ0)−1, where δ0 is a parameter that is defined by the configuration of the experiment and by the assumed model for the shape of the temperature profile. | eng |
dc.description.version | publishedVersion | eng |
dc.identifier.uri | https://oa.tib.eu/renate/handle/123456789/9322 | |
dc.identifier.uri | https://doi.org/10.34657/8360 | |
dc.language.iso | eng | eng |
dc.publisher | Les Ulis : EDP Sciences | eng |
dc.relation.doi | https://doi.org/10.1051/epjap/2015140491 | |
dc.relation.essn | 1286-0050 | |
dc.rights.license | CC BY 4.0 Unported | eng |
dc.rights.uri | https://creativecommons.org/licenses/by/4.0/ | eng |
dc.subject.ddc | 530 | eng |
dc.subject.other | Argon | eng |
dc.subject.other | Argon lasers | eng |
dc.subject.other | Delta wing aircraft | eng |
dc.subject.other | Heat convection | eng |
dc.subject.other | Laser beams | eng |
dc.subject.other | Laser theory | eng |
dc.subject.other | Plasma jets | eng |
dc.subject.other | Refractive index | eng |
dc.subject.other | Temperature measurement | eng |
dc.subject.other | Atmospheric plasmas | eng |
dc.subject.other | Deflection angles | eng |
dc.subject.other | Experimental calibration | eng |
dc.subject.other | Filament temperature | eng |
dc.subject.other | Maximum deflection | eng |
dc.subject.other | Maximum temperature | eng |
dc.subject.other | Temperature measurement methods | eng |
dc.subject.other | Temperature profiles | eng |
dc.subject.other | Atmospheric temperature | eng |
dc.title | On the fundamental relation of laser schlieren deflectometry for temperature measurements in filamentary plasmas | eng |
dc.type | Article | eng |
dc.type | Text | eng |
tib.accessRights | openAccess | eng |
wgl.contributor | INP | eng |
wgl.subject | Physik | eng |
wgl.type | Zeitschriftenartikel | eng |
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