A miniature fiberoptic probe has been developed for in-situ particle size measurements. The probe is based on a near-forward scattering technique and makes use of a two color scheme in which one wavelength is used for the size measurement while the second wavelength is used to monitor the presence of a particle in the center of the scattering volume. Tests of the probe have shown particle size range and sensitivity similar to that observed using fixed lens train systems but with the advantages of portability, ease of remote access and inherent alignment stability.
REFERENCES
1.
D.
Holve
and S. A.
Self
, “Optical particle sizing for in-situ measurements: Parts I, II
”, Appl. Opt.
18
, 1632
(1979
).2.
N.
Chigier
and G.
Stewart
, “Guest editorial: particle sizing and spray analysis
”, Opt. Eng.
23
, 554
(1984
).3.
J.
Hodkinson
, “Optical measurements in aerosols” in, Aerosol Science
, C. N.
Davies
, Ed., (Academic
, New York
, 1966
), p 287
.4.
D. J.
Holve
and K. D.
Annen
, “Optical particle counting, sizing, and velocimetry using intensity deconvolution
”, Opt. Eng.
23
, 591
(1984
).5.
C. F.
Hess
, “Non-intrusive optical single particle counter for measuring the size and velocity of droplets in a spray
”, Appl. Opt.
23
, 4375
(1984
).6.
J. C. F.
Wang
and K. R.
Hencken
, “In situ particle size measurements using a two-color laser scattering technique
,” Appl. Opt.
25
, 653
(1986
).7.
D. A.
Tichenor
, R. E.
Mitchell
, K. R.
Hencken
and S.
Niksa
, “Simultaneous in-situ measurement of the size, temperature and velocity of particle in a combustion environment
”, 20th Symposium (International) on Combustion
, (The Combustion Inst.
, Pittsburgh, PA
, 1984
) p 1213
.8.
D. J.
Holve
, D.
Tichenor
, J. C.
Wang
and D. J.
Hardesty
, “Design criteria and recent developments of optical single particle counters for fossil fuel systems
”, Opt. Eng.
20
, 529
(1981
).9.
W. G.
Tam
and A.
Zardecki
, “Multiple scattering corrections to the Beer-Lambert law, 1: open detector
”, Appl. Opt.
21
, 2405
(1982
).10.
T. W.
Cline
and R. B.
Jander
, “Wavefront aberration measurements of GRIN-type lenses
”, Appl. Opt.
21
, 1035
(1981
).11.
P.
Chylek
, “Partial-wave resonances and the ripple structure in the Mie normalized extinction cross-section
”, J. Opt. Soc. Am.
66
, 285
(1976
).12.
H. M.
Nussenzveig
and W. J.
Wiscombe
, “Efficiency factors for Mie scattering
”, Phys. Rev. Lett.
45
, 1490
(1980
).13.
D. N.
Payne
, L.
Reekie
, R. J.
Mears
, S. B.
Poole
, I. M.
Jauncey
and J. T.
Lin
, “Rare-earth doped single-mode fiber lasers, amplifiers and devices
”, in Tech. Digest, Conference on Lasers and Electro-Optics
, (Optical Society of America
, Washington, DC
, 1986
). paper FN1.14.
R.
Berglund
and B.
Liu
, “Generation of monodisperse aerosol standards
”, Environ. Sci. Technol.
7
, 147
(1973
).15.
C. F.
Bohren
and D. R.
Huffman
, Absorption and Scattering of Light by Small Particles
, (Wiley
, New York
, 1983
).16.
S. A.
Self
, P. H.
Paul
and R.
Keating
, “A fiberoptic probe for temperature measurements in MHD plasmas
”, High Temperature Gasdynamics Laboratory Report No. 120
, (Unpublished, 1980
).
This content is only available via PDF.
© 1987 Laser Institute of America.
1987
Laser Institute of America
You do not currently have access to this content.