Applied Physics B

, Volume 67, Issue 1, pp 115–123

Optical and microscopy investigations of soot structure alterations by laser-induced incandescence

Authors

  • R.L. Vander Wal
    • NCMR@NASA-Lewis Research Center, M.S. 110-3, 21 000 Brookpark Rd., Cleveland, OH 44135, USA (E-mail: randy@rvander.lerc.nasa.gov)
  • T.M. Ticich
    • Department of Chemistry, Centenary College of Louisiana, 2911 Centenary Blvd., Shreveport, LA 71134, USA (E-mail: tticich@centenary.edu)
  • A.B. Stephens
    • Department of Chemistry, Centenary College of Louisiana, 2911 Centenary Blvd., Shreveport, LA 71134, USA (E-mail: tticich@centenary.edu)
Regular paper

DOI: 10.1007/s003400050483

Cite this article as:
Vander Wal, R., Ticich, T. & Stephens, A. Appl Phys B (1998) 67: 115. doi:10.1007/s003400050483
  • 207 Views

2

at 1064 nm, vaporization/fragmentation of soot primary particles and aggregates occurs. Optical measurements are performed using a second laser pulse to probe the effects of these changes upon the LII signal. With the exception of very low fluences, the structural changes induced in the soot lead to a decreased LII intensity produced by the second laser pulse. These two-pulse experiments also show that these changes do not alter the LII signal on timescales less than 1 μs for fluences below the vaporization threshold.

PACS: 42.62 Hk; 78.20.Dj; 82.40.Py
Download to read the full article text

Copyright information

© Springer-Verlag 1998