Advanced

Measurements of the structures of nanoparticles in flames by in situ detection of scattered x-ray radiation

Ossler, Frederik LU and Larsson, Jörgen LU (2005) In Applied Physics Reviews 98(11).
Abstract
The angular pattern of scattered synchrotron x-ray radiation has been used to measure the composition of molecules and nanometer-sized particles in flames. The measured patterns were compared with patterns obtained from calculations for different species compositions. After ensuring that the calculations could reproduce the experiments for air and for ethylene flames under two different combustion conditions flames under special particle producing conditions were studied. In one case, the patterns showed a strong presence of spherical or fullerenelike structures with very little presence of graphitelike particles and little soot production on a cooling plate. In the other case, under soot producing conditions, the scattering showed a clear... (More)
The angular pattern of scattered synchrotron x-ray radiation has been used to measure the composition of molecules and nanometer-sized particles in flames. The measured patterns were compared with patterns obtained from calculations for different species compositions. After ensuring that the calculations could reproduce the experiments for air and for ethylene flames under two different combustion conditions flames under special particle producing conditions were studied. In one case, the patterns showed a strong presence of spherical or fullerenelike structures with very little presence of graphitelike particles and little soot production on a cooling plate. In the other case, under soot producing conditions, the scattering showed a clear presence of nanometer-sized graphite particles. The results show that high concentrations of particles with the size around 1 nm can be produced in flames. These particles either remain free or condense into larger particles, depending on the combustion conditions. This technique opens up for experimental studies of molecular and particle dynamics in combustion processes and other processes where nucleation and structural transformations of particles occur. (Less)
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Applied Physics Reviews
volume
98
issue
11
publisher
American Institute of Physics
external identifiers
  • wos:000234119600083
  • scopus:29244446249
ISSN
0021-8979
DOI
10.1063/1.2140080
language
English
LU publication?
yes
id
3c64cd3a-a158-4e63-8b17-1ca84e1b28bd (old id 210527)
date added to LUP
2007-08-20 09:15:06
date last changed
2017-03-12 03:37:41
@article{3c64cd3a-a158-4e63-8b17-1ca84e1b28bd,
  abstract     = {The angular pattern of scattered synchrotron x-ray radiation has been used to measure the composition of molecules and nanometer-sized particles in flames. The measured patterns were compared with patterns obtained from calculations for different species compositions. After ensuring that the calculations could reproduce the experiments for air and for ethylene flames under two different combustion conditions flames under special particle producing conditions were studied. In one case, the patterns showed a strong presence of spherical or fullerenelike structures with very little presence of graphitelike particles and little soot production on a cooling plate. In the other case, under soot producing conditions, the scattering showed a clear presence of nanometer-sized graphite particles. The results show that high concentrations of particles with the size around 1 nm can be produced in flames. These particles either remain free or condense into larger particles, depending on the combustion conditions. This technique opens up for experimental studies of molecular and particle dynamics in combustion processes and other processes where nucleation and structural transformations of particles occur.},
  author       = {Ossler, Frederik and Larsson, Jörgen},
  issn         = {0021-8979},
  language     = {eng},
  number       = {11},
  publisher    = {American Institute of Physics},
  series       = {Applied Physics Reviews},
  title        = {Measurements of the structures of nanoparticles in flames by in situ detection of scattered x-ray radiation},
  url          = {http://dx.doi.org/10.1063/1.2140080},
  volume       = {98},
  year         = {2005},
}