Non-intrusive thermometry in water: Novel temporal method using rise time-decay time ratio of ZnO phosphorescence in comparison with RhB PLIF and ZnO spectral imagery - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Measurement Science and Technology Année : 2023

Non-intrusive thermometry in water: Novel temporal method using rise time-decay time ratio of ZnO phosphorescence in comparison with RhB PLIF and ZnO spectral imagery

Résumé

The temporal characteristics of ZnO phosphor emission and a possibility to obtain instantaneous and mean 2-D temperature fields in fluids has been analysed in this article. Spectrometer tests have been performed by mixing ZnO micro-particles in liquid (water) to analyse the emission characteristics of the phosphor upon excitation by a 266nm laser. Using a fast gating camera, it has been shown that 2-D phosphor thermometry can be performed through temporal methods by using ZnO phosphors, that were thought to be unachievable previously. Additionally, a two camera temporal method is proposed by exploiting the rise time and decay time of the ZnO phosphor emission upon excitation. Sensitivity of the metrology is proposed and compared with commonly used Rhodamine B fluorescence and ZnO spectral methods.
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Dates et versions

hal-04352540 , version 1 (19-12-2023)

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Arunprasath Subramanian, Vincent Berrouet, Gildas Lalizel, Eva Dorignac, Tommaso Lenzi. Non-intrusive thermometry in water: Novel temporal method using rise time-decay time ratio of ZnO phosphorescence in comparison with RhB PLIF and ZnO spectral imagery. Measurement Science and Technology, 2023, ⟨10.1088/1361-6501/ad15dd⟩. ⟨hal-04352540⟩
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