Phase-Doppler anemometry with the dual burst technique for measurement of refractive index and absorption coefficient simultaneously with size and velocity

Abstract : The principle of the dual burst technique (DBT) based on phase-Doppler anemometry (PDA) is proposed for simultaneous particle refractive index, size and velocity measurements. This technique uses the trajectory effects in PDA systems to separate the two contributions of the different scattering processes. In the case of forward scattering and refracting particles, it is shown that from the phase of the reflected contribution, the particle diameter can be deduced, whereas from the refracted contribution the particle refractive index and velocity can be obtained. Furthermore, the intensity ratio of these two scattering processes can be used for absorption measurements. Simulations based on generalized Lorenz-Mie theory and experimental tests using monodispersed droplets of different refractive indices and absorption coefficients have validated this technique.
Document type :
Journal articles
Complete list of metadatas

https://hal.archives-ouvertes.fr/hal-00638328
Contributor : Guillaume Edouard <>
Submitted on : Friday, November 4, 2011 - 3:29:09 PM
Last modification on : Friday, July 26, 2019 - 2:28:29 PM

Links full text

Identifiers

Citation

F. Onofri, Thierry Girasole, Gérard Gréhan, Gérard Gouesbet, G. Brenn, et al.. Phase-Doppler anemometry with the dual burst technique for measurement of refractive index and absorption coefficient simultaneously with size and velocity. Particle and Particle Systems Characterization, Wiley-VCH Verlag, 1996, 13 (2), pp.112-124. ⟨10.1002/ppsc.19960130209⟩. ⟨hal-00638328⟩

Share

Metrics

Record views

95