Expand this Topic clickable element to expand a topic
Skip to content
Optica Publishing Group

Numerical evaluation of droplet sizing based on the ratio of fluorescent and scattered light intensities (LIF/Mie technique)

Not Accessible

Your library or personal account may give you access

Abstract

The dependence of fluorescent and scattered light intensities from spherical droplets on droplet diameter was evaluated using Mie theory. The emphasis is on the evaluation of droplet sizing, based on the ratio of laser-induced fluorescence and scattered light intensities (LIF/Mie technique). A parametric study is presented, which includes the effects of scattering angle, the real part of the refractive index and the dye concentration in the liquid (determining the imaginary part of the refractive index). The assumption that the fluorescent and scattered light intensities are proportional to the volume and surface area of the droplets for accurate sizing measurements is not generally valid. More accurate sizing measurements can be performed with minimal dye concentration in the liquid and by collecting light at a scattering angle of 60° rather than the commonly used angle of 90°. Unfavorable to the sizing accuracy are oscillations of the scattered light intensity with droplet diameter that are profound at the sidescatter direction (90°) and for droplets with refractive indices around 1.4.

© 2011 Optical Society of America

Full Article  |  PDF Article
More Like This
Polarization-dependent LIF/Mie ratio for sizing of micrometric ethanol droplets doped with Nile red

Matthias Koegl, Hongfei Dai, Kevin Baderschneider, Hannah Ulrich, and Lars Zigan
Appl. Opt. 61(14) 4204-4214 (2022)

Analysis of LIF and Mie signals from single micrometric droplets for instantaneous droplet sizing in sprays

Matthias Koegl, Bernhard Hofbeck, Kevin Baderschneider, Yogeshwar Nath Mishra, Franz J. T. Huber, Edouard Berrocal, Stefan Will, and Lars Zigan
Opt. Express 26(24) 31750-31766 (2018)

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Figures (14)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Tables (2)

You do not have subscription access to this journal. Article tables are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Equations (8)

You do not have subscription access to this journal. Equations are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Select as filters


Select Topics Cancel
© Copyright 2024 | Optica Publishing Group. All Rights Reserved