title: Photoacoustic determination of optical absorption to extinction ratio in aerosols.
abstract: The photoacoustic technique has been used in conjunction with an optical transmission measurement to determine the fraction of light absorbed in cigarette and acetylene smoke aerosols. At 0.5145-microm wavelength,the absorption-to-extinction fraction is 0.01 +/- 0.003 for cigarette smoke and is in excellent agreement with predictions from Mie theory for smoke particles having a refractive index of 1.45-0.00133i and a median diameter in the 0.15-0.65-microm range. For acetylene smoke the absorbed fraction was 0.85 +/- 0.05.
authors.forename: D M
authors.initials: DM
authors.lastname: Roessler
authors.forename: F R
authors.initials: FR
authors.lastname: Faxvog