Abstract

Optoacoustic measurements of acetylene smoke in a simple nonresonant cell at wavelengths of 0.5145 and 10.6 µm give specific absorption coefficients <i>A <sub>A</sub></i> of 8.3±0.9 and 0.76±0.1 m<sup>2</sup> g<sup>-1</sup>, respectively. In the visible region, about 85% of the total optical attenuation is due to absorption. These data are consistent with a simple model in which the smoke is comprised of agglomerated carbon spheres. The experimentally determined responsivity of the optoacoustic cell is in good agreement with theory.

© 1980 Optical Society of America

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  1. Optoacoustic Spectroscopy and Detection, edited by Y.-H. Pao, (Academic, New York, 1977).
  2. L. B. Kreuzer, "Ultralow gas concentration infrared absorption spectroscopy," J. Appl. Phys, 42, 2934–2943 (1971).
  3. C. K. N. Patel and R. J. Kerl, "A new optoacoustic cell with improved performance," Appl. Phys. Lett. 30, 578–579 (1977).
  4. P. V. Slobodskaya and N. F. Tkachenko, "Study of the Relaxation Time for the Vibrational Energy of the NO Molecule by Means of the Spectrophone," Opt. Spectrosc. 29, 138–142 (1970).
  5. C. W. Bruce and R. G. Pinnick, "In-situ measurements of aerosol absorption with a resonant cw laser spectrophone," Appl. Opt. 16, 1762–1765 (1977).
  6. R. W. Terhune and J. E. Anderson, "Spectrophone measurement of the absorption of visible light by aerosols in the atmosphere," Opt. Lett. 1, 70–72 (1977).
  7. D. M. Roessler and F. R. Faxvog, "Optical properties of acetylene smoke at 0.5145 µm and 10.6 µm wavelengths," J. Opt. Soc. Am. (to be published).
  8. F. R. Faxvog and D. M. Roessler, "Carbon aerosol visibility vs particle size distribution," Appl Opt. 17, 2612–2616 (1978).
  9. W. F. Stoecker, "Smoke Density Measurement," Mech. Engr. 72, 793–798 (1950).
  10. R. Tsu, H. J. Gonzalez, and I. C. Hernandez, "Observation of Splitting of the E2g Mode and Two-Phonon Spectrum in Graphites," Solid State Commun. 27, 507–510 (1978).
  11. S. C. Graham, "The Refractive Indices of Isolated and Aggregated Soot Particles," Combustion Sci. Technol. 9, 159–163 (1974).
  12. W. H. Dalzell and A. F. Sarofim, "Optical Constants of Soot and Their Application to Heat-Flux Calculations," J. Heat Transfer 91, 100–104 (1969).
  13. P. J. Groblicki and C. R. Begeman, "Particle Size Variation in Diesel Car Exhaust," SAE Paper 790421, February 1979.
  14. D. F. Dolan and D. B. Kittelson, "Diesel Exhaust Aerosol Particle Size Distributions—Comparison of Theory and Experiment," SAE paper 780110, February 1978, pp. 1–7.
  15. Handbook of Chemistry and Physics, 58th Ed. (CRC, Cleveland, Ohio, 1977) p. D–192.
  16. F. E. Volz, "Infrared Absorption by Atmospheric Aerosol Substances," J. Geophys. Res. 77, 1017–1031 (1972).
  17. F. R. Faxvog and D. M. Roessler, "Optoacoustic Measurement of Diesel Particulate Emissions," J. Appl. Phys. (to be published).

1978 (2)

F. R. Faxvog and D. M. Roessler, "Carbon aerosol visibility vs particle size distribution," Appl Opt. 17, 2612–2616 (1978).

R. Tsu, H. J. Gonzalez, and I. C. Hernandez, "Observation of Splitting of the E2g Mode and Two-Phonon Spectrum in Graphites," Solid State Commun. 27, 507–510 (1978).

1977 (3)

1974 (1)

S. C. Graham, "The Refractive Indices of Isolated and Aggregated Soot Particles," Combustion Sci. Technol. 9, 159–163 (1974).

1972 (1)

F. E. Volz, "Infrared Absorption by Atmospheric Aerosol Substances," J. Geophys. Res. 77, 1017–1031 (1972).

1971 (1)

L. B. Kreuzer, "Ultralow gas concentration infrared absorption spectroscopy," J. Appl. Phys, 42, 2934–2943 (1971).

1970 (1)

P. V. Slobodskaya and N. F. Tkachenko, "Study of the Relaxation Time for the Vibrational Energy of the NO Molecule by Means of the Spectrophone," Opt. Spectrosc. 29, 138–142 (1970).

1969 (1)

W. H. Dalzell and A. F. Sarofim, "Optical Constants of Soot and Their Application to Heat-Flux Calculations," J. Heat Transfer 91, 100–104 (1969).

1950 (1)

W. F. Stoecker, "Smoke Density Measurement," Mech. Engr. 72, 793–798 (1950).

Anderson, J. E.

Begeman, C. R.

P. J. Groblicki and C. R. Begeman, "Particle Size Variation in Diesel Car Exhaust," SAE Paper 790421, February 1979.

Bruce, C. W.

Dalzell, W. H.

W. H. Dalzell and A. F. Sarofim, "Optical Constants of Soot and Their Application to Heat-Flux Calculations," J. Heat Transfer 91, 100–104 (1969).

Dolan, D. F.

D. F. Dolan and D. B. Kittelson, "Diesel Exhaust Aerosol Particle Size Distributions—Comparison of Theory and Experiment," SAE paper 780110, February 1978, pp. 1–7.

Faxvog, F. R.

F. R. Faxvog and D. M. Roessler, "Carbon aerosol visibility vs particle size distribution," Appl Opt. 17, 2612–2616 (1978).

D. M. Roessler and F. R. Faxvog, "Optical properties of acetylene smoke at 0.5145 µm and 10.6 µm wavelengths," J. Opt. Soc. Am. (to be published).

F. R. Faxvog and D. M. Roessler, "Optoacoustic Measurement of Diesel Particulate Emissions," J. Appl. Phys. (to be published).

Gonzalez, H. J.

R. Tsu, H. J. Gonzalez, and I. C. Hernandez, "Observation of Splitting of the E2g Mode and Two-Phonon Spectrum in Graphites," Solid State Commun. 27, 507–510 (1978).

Graham, S. C.

S. C. Graham, "The Refractive Indices of Isolated and Aggregated Soot Particles," Combustion Sci. Technol. 9, 159–163 (1974).

Groblicki, P. J.

P. J. Groblicki and C. R. Begeman, "Particle Size Variation in Diesel Car Exhaust," SAE Paper 790421, February 1979.

Hernandez, I. C.

R. Tsu, H. J. Gonzalez, and I. C. Hernandez, "Observation of Splitting of the E2g Mode and Two-Phonon Spectrum in Graphites," Solid State Commun. 27, 507–510 (1978).

Kerl, R. J.

C. K. N. Patel and R. J. Kerl, "A new optoacoustic cell with improved performance," Appl. Phys. Lett. 30, 578–579 (1977).

Kittelson, D. B.

D. F. Dolan and D. B. Kittelson, "Diesel Exhaust Aerosol Particle Size Distributions—Comparison of Theory and Experiment," SAE paper 780110, February 1978, pp. 1–7.

Kreuzer, L. B.

L. B. Kreuzer, "Ultralow gas concentration infrared absorption spectroscopy," J. Appl. Phys, 42, 2934–2943 (1971).

Patel, C. K. N.

C. K. N. Patel and R. J. Kerl, "A new optoacoustic cell with improved performance," Appl. Phys. Lett. 30, 578–579 (1977).

Pinnick, R. G.

Roessler, D. M.

F. R. Faxvog and D. M. Roessler, "Carbon aerosol visibility vs particle size distribution," Appl Opt. 17, 2612–2616 (1978).

F. R. Faxvog and D. M. Roessler, "Optoacoustic Measurement of Diesel Particulate Emissions," J. Appl. Phys. (to be published).

D. M. Roessler and F. R. Faxvog, "Optical properties of acetylene smoke at 0.5145 µm and 10.6 µm wavelengths," J. Opt. Soc. Am. (to be published).

Sarofim, A. F.

W. H. Dalzell and A. F. Sarofim, "Optical Constants of Soot and Their Application to Heat-Flux Calculations," J. Heat Transfer 91, 100–104 (1969).

Slobodskaya, P. V.

P. V. Slobodskaya and N. F. Tkachenko, "Study of the Relaxation Time for the Vibrational Energy of the NO Molecule by Means of the Spectrophone," Opt. Spectrosc. 29, 138–142 (1970).

Stoecker, W. F.

W. F. Stoecker, "Smoke Density Measurement," Mech. Engr. 72, 793–798 (1950).

Terhune, R. W.

Tkachenko, N. F.

P. V. Slobodskaya and N. F. Tkachenko, "Study of the Relaxation Time for the Vibrational Energy of the NO Molecule by Means of the Spectrophone," Opt. Spectrosc. 29, 138–142 (1970).

Tsu, R.

R. Tsu, H. J. Gonzalez, and I. C. Hernandez, "Observation of Splitting of the E2g Mode and Two-Phonon Spectrum in Graphites," Solid State Commun. 27, 507–510 (1978).

Volz, F. E.

F. E. Volz, "Infrared Absorption by Atmospheric Aerosol Substances," J. Geophys. Res. 77, 1017–1031 (1972).

Appl Opt. (1)

F. R. Faxvog and D. M. Roessler, "Carbon aerosol visibility vs particle size distribution," Appl Opt. 17, 2612–2616 (1978).

Appl. Opt. (1)

Appl. Phys. Lett. (1)

C. K. N. Patel and R. J. Kerl, "A new optoacoustic cell with improved performance," Appl. Phys. Lett. 30, 578–579 (1977).

Combustion Sci. Technol. (1)

S. C. Graham, "The Refractive Indices of Isolated and Aggregated Soot Particles," Combustion Sci. Technol. 9, 159–163 (1974).

J. Appl. Phys (1)

L. B. Kreuzer, "Ultralow gas concentration infrared absorption spectroscopy," J. Appl. Phys, 42, 2934–2943 (1971).

J. Geophys. Res. (1)

F. E. Volz, "Infrared Absorption by Atmospheric Aerosol Substances," J. Geophys. Res. 77, 1017–1031 (1972).

J. Heat Transfer (1)

W. H. Dalzell and A. F. Sarofim, "Optical Constants of Soot and Their Application to Heat-Flux Calculations," J. Heat Transfer 91, 100–104 (1969).

Mech. Engr. (1)

W. F. Stoecker, "Smoke Density Measurement," Mech. Engr. 72, 793–798 (1950).

Opt. Lett. (1)

Opt. Spectrosc. (1)

P. V. Slobodskaya and N. F. Tkachenko, "Study of the Relaxation Time for the Vibrational Energy of the NO Molecule by Means of the Spectrophone," Opt. Spectrosc. 29, 138–142 (1970).

Solid State Commun. (1)

R. Tsu, H. J. Gonzalez, and I. C. Hernandez, "Observation of Splitting of the E2g Mode and Two-Phonon Spectrum in Graphites," Solid State Commun. 27, 507–510 (1978).

Other (6)

F. R. Faxvog and D. M. Roessler, "Optoacoustic Measurement of Diesel Particulate Emissions," J. Appl. Phys. (to be published).

Optoacoustic Spectroscopy and Detection, edited by Y.-H. Pao, (Academic, New York, 1977).

P. J. Groblicki and C. R. Begeman, "Particle Size Variation in Diesel Car Exhaust," SAE Paper 790421, February 1979.

D. F. Dolan and D. B. Kittelson, "Diesel Exhaust Aerosol Particle Size Distributions—Comparison of Theory and Experiment," SAE paper 780110, February 1978, pp. 1–7.

Handbook of Chemistry and Physics, 58th Ed. (CRC, Cleveland, Ohio, 1977) p. D–192.

D. M. Roessler and F. R. Faxvog, "Optical properties of acetylene smoke at 0.5145 µm and 10.6 µm wavelengths," J. Opt. Soc. Am. (to be published).

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