The DOI matches its Crossref record; 1 of the 1 references it cites were found in a registry or an index.
A Novel Method for Estimating Light-Scattering Properties of Soot Aerosols Using a Modified Single-Particle Soot Photometer
Open accessAbstract
A Single-Particle Soot Photometer (SP2) detects black refractory or elemental carbon (EC) in particles by passing them through an intense laser beam. The laser light heats EC in particles causing them to vaporize in the beam. Detection of wavelength-resolved thermal radiation emissions provides quantitative information on the EC mass of individual particles in the size range of 0.2–1 μm diameter. Non-absorbing particles are sized based on the amount of light they scatter from the laser beam. The time series of the scattering signal of a non-absorbing particle is a Gaussian, because the SP2 laser is in the TEM00 mode. Information on the scattering properties of externally and internally mixed EC particles as detected by the SP2 is lost in general, because each particle changes size, shape, and composition as it passes through the laser beam. Thus, scattered light from a sampled EC particle does not yield a full Gaussian waveform. A method for determining the scattering properties of EC particles using a two-element avalanche photodiode (APD) is described here. In this method, the Gaussian scattering function is constructed from the leading edge of the scattering signal (before the particle is perturbed by the laser), the Gaussian width, and the location of the leading edge in the beam derived from the two-element APD signal. The method allows an SP2 to determine the scattering properties of individual EC particles as well as the EC mass. Detection of polystyrene latex spheres, well-characterized EC particles with and without organic coatings, and Mie scattering calculations are used to validate the method.
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Citations
Cites
Radiative forcing and climate response
Hansen, J., Sato, M., & Ruedy, R. (1997) · Journal of Geophysical Research: Atmospheres · doi:10.1029/96jd03436 · Cited by 2,241
Cited by
Schwarz, J. P., Gao, R. S., Spackman, J. R., Watts, L. A., Thomson, D. S., Fahey, D. W., Ryerson, T. B., Peischl, J., Holloway, J. S., Trainer, M., et al. (2008) · Geophysical Research Letters · doi:10.1029/2008gl033968 · Cited by 466
Self-citationAerosol Mixing State: Measurements, Modeling, and Impacts
Riemer, N., Ault, A. P., West, M., Craig, R. L., & Curtis, J. H. (2019) · Reviews of Geophysics · doi:10.1029/2018rg000615 · Cited by 459
Michelsen, H. A., Schulz, C., Smallwood, G. J., & Will, S. (2015) · Progress in Energy and Combustion Science · doi:10.1016/j.pecs.2015.07.001 · Cited by 423
Effects of Mixing State on Black Carbon Measurements by Laser-Induced Incandescence
Moteki, N., & Kondo, Y. (2007) · Aerosol Science and Technology · doi:10.1080/02786820701199728 · Cited by 309
Metadata
- Authors
- Gao, R. S., Schwarz, J. P., Kelly, K. K., Fahey, D. W., Watts, L. A., Thompson, T. L., Spackman, J. R., Slowik, J. G., Cross, E. S., Han, J.-H., Davidovits, P., Onasch, T. B., & Worsnop, D. R.
- Venue
- Aerosol Science and Technology
- Publisher
- Informa UK Limited
- Published
- 2007-02
- Volume
- 41
- Issue
- 2
- Pages
- 125-135
- ISSN
- 0278-6826 (ISSN-L)
- 1521-7388
- OpenAlex
- W2022656631
- Cited by
- 326
- References
- 1
- FWCI
- 5.55
- Type
- journal article
- Language
- en
- Open access
- bronze
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- The paper
- Gao, R. S., Schwarz, J. P., Kelly, K. K., Fahey, D. W., Watts, L. A., Thompson, T. L., Spackman, J. R., Slowik, J. G., Cross, E. S., Han, J.-H., Davidovits, P., Onasch, T. B., & Worsnop, D. R. (2007). A Novel Method for Estimating Light-Scattering Properties of Soot Aerosols Using a Modified Single-Particle Soot Photometer. Aerosol Science and Technology. https://doi.org/10.1080/02786820601118398
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