Journal article
Particle formation from pulsed laser irradiation of soot aggregates studied with a scanning mobility particle sizer, a transmission electron microscope, and a scanning transmission x-ray microscope
Applied optics (2004), Vol.46(6), pp.959-977
02/20/2007
DOI: 10.1364/AO.46.000959
PMID: 17279144
Abstract
We investigated the physical and chemical changes induced in soot aggregates exposed to laser radiation using a scanning mobility particle sizer, a transmission electron microscope, and a scanning transmission x-ray microscope to perform near-edge x-ray absorption fine structure spectroscopy. Laser-induced nanoparticle production was observed at fluences above 0.12 J/cm(2) at 532 nm and 0.22 J/cm(2) at 1064 nm. Our results indicate that new particle formation proceeds via (1) vaporization of small carbon clusters by thermal or photolytic mechanisms, followed by homogeneous nucleation, (2) heterogeneous nucleation of vaporized carbon clusters onto material ablated from primary particles, or (3) both processes.
Details
- Title: Subtitle
- Particle formation from pulsed laser irradiation of soot aggregates studied with a scanning mobility particle sizer, a transmission electron microscope, and a scanning transmission x-ray microscope
- Creators
- Hope A Michelsen - Combustion Research Facility, Sandia National Laboratory, P.O. Box 969, Mail Stop 9055, Livermore, California 94551-0969, USA. hamiche@sandia.govAlexei V TivanskiMary K GillesLaura H van PoppelMark A DanssonPeter R Buseck
- Resource Type
- Journal article
- Publication Details
- Applied optics (2004), Vol.46(6), pp.959-977
- DOI
- 10.1364/AO.46.000959
- PMID
- 17279144
- NLM abbreviation
- Appl Opt
- ISSN
- 1559-128X
- eISSN
- 2155-3165
- Language
- English
- Date published
- 02/20/2007
- Academic Unit
- Chemistry
- Record Identifier
- 9984216598102771
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