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Applied Optics

Applied Optics


  • Vol. 38, Iss. 30 — Oct. 20, 1999
  • pp: 6408–6420

Infrared and visible Fourier-transform spectra of sulfuric-acid–water aerosols at 230 and 294 K

Adam E. Heathfield, David A. Newnham, John Ballard, Roy G. Grainger, and Alyn Lambert  »View Author Affiliations

Applied Optics, Vol. 38, Issue 30, pp. 6408-6420 (1999)

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The extinction spectra of aqueous sulfuric acid aerosols fully covering the mid-IR to visible regions from 750 to 23,000 cm-1 (13.9–0.4 µm) have been measured in the laboratory with a Fourier-transform spectrometer. Both large and small aerosol particles with compositions of approximately 60–70-wt. % H2SO4 were generated and their spectra recorded at 230 and 294 K. The spectra were fitted to a model incorporating room-temperature refractive-index data [Appl. Opt. 14, 208 (1975)] and Mie theory calculations to characterize the composition and size distributions of the aerosol samples.

© 1999 Optical Society of America

OCIS Codes
(010.1110) Atmospheric and oceanic optics : Aerosols
(010.1280) Atmospheric and oceanic optics : Atmospheric composition
(120.6200) Instrumentation, measurement, and metrology : Spectrometers and spectroscopic instrumentation
(280.0280) Remote sensing and sensors : Remote sensing and sensors
(290.0290) Scattering : Scattering
(300.6300) Spectroscopy : Spectroscopy, Fourier transforms

Original Manuscript: February 23, 1999
Revised Manuscript: June 28, 1999
Published: October 20, 1999

Adam E. Heathfield, David A. Newnham, John Ballard, Roy G. Grainger, and Alyn Lambert, "Infrared and visible Fourier-transform spectra of sulfuric-acid–water aerosols at 230 and 294 K," Appl. Opt. 38, 6408-6420 (1999)

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