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Applied Optics

Applied Optics


  • Vol. 29, Iss. 31 — Nov. 1, 1990
  • pp: 4574–4577

Measurement of internal circulation in droplets using laser-induced fluorescence

Michael Winter and Lynn A. Melton  »View Author Affiliations

Applied Optics, Vol. 29, Issue 31, pp. 4574-4577 (1990)

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A diagnostic technique based on the oxygen quenching of laser-induced fluorescence from naphthalene has been developed to investigate whether internal circulation is important in submillimeter hydrocarbon droplets. Images have been obtained in 300–500 μm diam droplets of decane. Oxygen is absorbed into the surface liquid of initially oxygen-free droplets and quenches the naphthalene fluorescence. The resulting fluorescence image, including darker zones where oxygen is present, is recorded on a 2-D CCD detector. Computer processing of the images obtained with and without oxygen present reveals internal circulation patterns.

© 1990 Optical Society of America

Original Manuscript: October 2, 1989
Published: November 1, 1990

Michael Winter and Lynn A. Melton, "Measurement of internal circulation in droplets using laser-induced fluorescence," Appl. Opt. 29, 4574-4577 (1990)

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