Abstract
A compact experimental setup that integrates laser-induced incandescence (LII) and one-angle elastic light scattering (1A-ELS) to measure the size of polydisperse soot aggregates is described. A 532 nm laser and a detection angle of 35 degrees were employed, which provided sensitivity for aggregate radius of gyrations (R g) of R g≤200 nm. Both lognormal and self-preserving distribution functions are compared with width parameters derived from both aggregation theory and transmission electron microscopy (TEM) measurements. Using these distributions, mean aggregate sizes derived from the scattering measurements are compared. The LII+1A-ELS technique is validated with a two-angle elastic light scattering (2A-ELS) approach with an additional detection angle at 145 deg. Unlike LII+1A-ELS, the 2A-ELS technique has the advantage of not requiring knowledge of soot optical properties. Good agreement is found between the two techniques for a given distribution. A fundamental discrepancy exists between distributions derived from TEM and those according to aggregation theory, limiting the accuracy of both 2A-ELS and LII+1A-ELS. The dependence of both techniques on laser fluence and hence soot temperature is examined and discussed.
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C. Schulz, B.F. Kock, M. Hofmann, H. Michelsen, S. Will, B. Bougie, R. Suntz, G. Smallwood, Appl. Phys. B 83, 333 (2006)
C.M. Sorensen, J. Cai, N. Lu, Appl. Opt. 31, 6547 (1992)
S.S. Iyer, T.A. Litzinger, S.-Y. Lee, R.J. Santoro, Combust. Flame 149, 206 (2007)
J. Reimann, S.A. Kuhlmann, S. Will, Appl. Phys. B 96, 583 (2009)
H. Bockhorn, H. Geitlinger, B. Jungfleisch, T. Lehre, A. Schon, T. Streibel, R. Suntz, Phys. Chem. Chem. Phys. 4, 3780 (2002)
C.M. Sorensen, Aerosol Sci. Technol. 35, 648 (2001)
S. Gangopadhyay, I. Elminyawi, C.M. Sorensen, Appl. Opt. 30, 4859 (1991)
Ü.Ö. Köylü, G.M. Faeth, J. Heat Transf. 116, 971 (1994)
C. Oh, C.M. Sorensen, J. Aerosol Sci. 28, 937 (1997)
S. DeIuliis, F. Cignoli, S. Benecchi, G. Zizak, Appl. Opt. 37, 7865 (1998)
R.A. Dobbins, C.M. Megaridis, Appl. Opt. 30, 4747 (1991)
Ü.Ö. Köylü, Combust. Flame 109, 488 (1997)
R. Puri, T.F. Richardson, R.J. Santoro, R.A. Dobbins, Combust. Flame 92, 320 (1993)
G.M. Faeth, Ü.Ö. Köylü, Combust. Sci. Technol. 108, 207 (1995)
S.S. Krishnan, K.C. Lin, G.M. Faeth, J. Heat Transf. 123, 331 (2001)
Y.W. Teng, U.O. Koylu, Appl. Opt. 45, 4396 (2006)
J. Cai, N. Lu, C.M. Sorensen, Langmuir 9, 2861 (1993)
S.K. Friedlander, C.-S. Wang, J. Colloid Interface Sci. 22, 126 (1966)
C.-S. Wang, S.K. Friedlander, J. Colloid Interface Sci. 24, 170 (1967)
P.G.J. van Dongen, M.H. Ernst, Phys. Rev. Lett. 54, 1396 (1985)
K. Tian, F.S. Liu, K.A. Thomson, D.R. Snelling, G.J. Smallwood, D.S. Wang, Combust. Flame 138, 195 (2004)
P.E. Bengtsson, M. Alden, Appl. Phys. B 48, 155 (1989)
S. Will, S. Schraml, A. Leipertz, Opt. Lett. 20, 2342 (1995)
S. Will, S. Schraml, A. Leipertz, Proc. Combust. Inst. 2, 2277 (1996)
H. Oltmann, J. Reimann, S. Will, Combust. Flame 157, 516 (2010)
D.R. Snelling, G.J. Smallwood, F. Liu, Ö.L. Gülder, W.D. Bachalo, Appl. Opt. 44, 6773 (2005)
D.R. Snelling, K.A. Thomson, F. Liu, G.J. Smallwood, Appl. Phys. B 96, 657 (2009)
D.R. Snelling et al., Society of Automotive Engineers, PA (1999). doi:10.4271/1999-01-3653
D.R. Snelling, K.A. Thomson, G.J. Smallwood, Ö.L. Gülder, Appl. Opt. 38, 2478 (1999)
A. Bucholtz, Appl. Opt. 34, 2765 (1995)
A.D.P. Rao, Shardanand, Absolute Rayleigh scattering cross sections of gases and freons of stratospheric interest in the visible and ultraviolet regions. Tech. Rep. TN D-8442 (National Aeronautics and Space Administration, Wallops Island, VA, USA, 1977)
R.R. Rudder, D.R. Bach, Rayleigh scattering of ruby laser light in neutral gases. Tech. Rep. (Michigan Univ. Ann Arbor Dept. of Nuclear Engineering, Ann Arbor, MI, USA, 1967)
R.B. Barat, J.P. Longwell, A.F. Sarofim, S.P. Smith, E. Bar-Ziv, Appl. Opt. 30, 3003 (1991)
T.M. Dyer, AIAA J. 17, 912 (1979)
R. Jullien, R. Botet, Aggregation and Fractal Aggregates (World Scientific, Singapore, 1987)
G.M. Wang, C.M. Sorensen, Aerosol Sci. Technol. 34, 297 (2001)
F. Pierce, C.M. Sorensen, A. Chakrabarti, Phys. Rev. E 7402, Nil_432 (2006)
Ü.Ö. Köylü, G.M. Faeth, J. Heat Transf. 115, 409 (1993)
R.K. Chakrabarty et al., Appl. Opt. 46, 6990 (2007)
T.L. Farias, Ü.Ö. Köylü, M.G. Carvalho, Appl. Opt. 35, 6560 (1996)
O. Link, D.R. Snelling, K.A. Thomson, G.J. Smallwood, Proc. Combust. Inst. (2010)
C.M. Sorensen, J. Cai, N. Lu, Langmuir 8, 2064 (1992)
D.R. Snelling, K.A. Thomson, G.J. Smallwood, O.L. Gulder, E.J. Weckman, R.A. Fraser, AIAA J. 40, 1789 (2002)
H. Bladh, P.E. Bengtsson, Appl. Phys. B 78, 241 (2004)
M. Charwath, R. Suntz, H. Bockhorn, Appl. Phys. B 83, 435 (2006)
T. Dreier, B. Bougie, N. Dam, T. Gerber, Appl. Phys. B 83, 403 (2006)
B.F. Kock, B. Tribalet, C. Schulz, P. Roth, Combust. Flame 147, 79 (2006)
A. Leipertz, S. Dankers, Part. Part. Syst. Charact. 20, 81 (2003)
F. Liu, K.J. Daun, D.R. Snelling, G.J. Smallwood, Appl. Phys. B 83, 355 (2006)
C.M. Megaridis, R.A. Dobbins, Combust. Sci. Technol. 66, 1 (1989)
C.M. Megaridis, R.A. Dobbins, Combust. Sci. Technol. 71, 95 (1990)
L. Madler, S.K. Friedlander, Aerosol Air Qual. Res. 7, 304 (2007)
F.G. Pierce, Aggregation in colloids and aerosols. PhD thesis, Kansas State University, Manhattan, Kansas, 2007
K. Tian, K.A. Thomson, F.S. Liu, D.R. Snelling, G.J. Smallwood, D.S. Wang, Combust. Flame 144, 782 (2006)
A.M. Brasil, T.L. Farias, M.G. Carvalho, J. Aerosol Sci. 30, 1379 (1999)
C.M. Sorensen, G.D. Feke, Aerosol Sci. Technol. 25, 328 (1996)
F. Liu, D.R. Snelling, K.A. Thomson, G.J. Smallwood, Appl. Phys. B 96, 623 (2009)
B.M. Crosland, M.R. Johnson, K.A. Thomson, Appl. Phys. B 1 (2010)
G.D. Yoder, P.K. Diwakar, D.W. Hahn, Appl. Opt. 44, 4211 (2005)
H.A. Michelsen, P.E. Schrader, F. Goulay, Carbon 48, 2175 (2010)
P.O. Witze, S. Hochgreb, D. Kayes, H.A. Michelsen, C.R. Shaddix, Appl. Opt. 40, 2443 (2001)
C.F. Bohren, D.R. Huffman, Absorption and Scattering of Light by Small Particles (Wiley, New York, 1983)
T.C. Bond, R.W. Bergstrom, Aerosol Sci. Technol. 40, 1 (2006)
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Snelling, D.R., Link, O., Thomson, K.A. et al. Measurement of soot morphology by integrated LII and elastic light scattering. Appl. Phys. B 104, 385–397 (2011). https://doi.org/10.1007/s00340-011-4394-6
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DOI: https://doi.org/10.1007/s00340-011-4394-6