NDLI: Determining aerosol particle size distributions using time-resolved laser-induced incandescence

Content Provider	Springer Nature Link
Author	Daun, K.J. Stagg, B.J. Liu, F. Smallwood, G.J. Snelling, D.R.
Copyright Year	2007
Abstract	The particle size distribution within an aerosol containing refractory nanoparticles can be inferred using time-resolved laser-induced incandescence (TR-LII). In this procedure, a small volume of aerosol is heated to incandescent temperatures by a short laser pulse, and the incandescence of the aerosol particles is then measured as they return to the ambient gas temperature by conduction heat transfer. Although the cooling rate of an individual particle depends on its volume-to-area ratio, recovering the particle size distribution from the observed temporal decay of the LII signal is complicated by the fact that the LII signal is due to the incandescence of all particle size classes within the sample volume, and because of this, the particle size distribution is related to the time-resolved LII signal through a mathematically ill-posed equation.This paper reviews techniques proposed in the literature for recovering particle size distributions from TR-LII data. The characteristics of this problem are then discussed in detail, with a focus on the effect of ill-posedness on the stability and uniqueness of the recovered particle size distributions. Finally, the performance of each method is evaluated and compared based on the results of a perturbation analysis.
Starting Page	363
Ending Page	372
Page Count	10
File Format	PDF
ISSN	09462171
Journal	Applied Physics B
Volume Number	87
Issue Number	2
e-ISSN	14320649
Language	English
Publisher	Springer-Verlag
Publisher Date	2007-02-17
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Physics and Applied Physics in Engineering Optical Spectroscopy, Ultrafast Optics Quantum Optics, Quantum Electronics, Nonlinear Optics Laser Technology and Physics, Photonics Physical Chemistry Electromagnetism, Optics and Lasers
Content Type	Text
Resource Type	Article
Subject	Physics and Astronomy

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