Abstract
An in situ method to image individual aerosol particles upon desorption/ionization in a single particle aerosol mass spectrometer using shadowgraph imaging is presented and applied directly to determine a 2D spatial distribution of 5.0 μ m particles. This new technique is complementary to previously reported methods for the determination of focused particle beam profiles and has several advantages, including a very low particle concentration requirement and the ability to collect the image of an individual particle with a correlated mass spectrum. Images are presented for 1.3, 2.1, 3.0, and 5.0 μ m polystyrene latex spheres. Particle beam profiles are presented in the directions perpendicular and parallel to the particle beam axis. These results are qualitatively compared to those of a complementary particle collection method (dusting) used at Lawrence Livermore National Laboratory to characterize aerosol beam focusing.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 10-18 |
| Number of pages | 9 |
| Journal | Journal of Aerosol Science |
| Volume | 39 |
| Issue number | 1 |
| DOIs | |
| State | Published - Jan 2008 |
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Keywords
- Aerosol
- Mass spectrometry
- Shadowgraph
- Single particle imaging
ASJC Scopus subject areas
- Atmospheric Science
- Environmental Science(all)
Cite this
Supramicrometer particle shadowgraph imaging in the ionization region of a single particle aerosol mass spectrometer. / Farquar, George R.; Steele, Paul T.; McJimpsey, Erica L.; Lebrilla, Carlito B; Tobias, Herbert J.; Gard, Eric E.; Frank, Matthias; Coffee, Keith; Riot, Vincent; Fergenson, David P.
In: Journal of Aerosol Science, Vol. 39, No. 1, 01.2008, p. 10-18.Research output: Contribution to journal › Article
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TY - JOUR
T1 - Supramicrometer particle shadowgraph imaging in the ionization region of a single particle aerosol mass spectrometer
AU - Farquar, George R.
AU - Steele, Paul T.
AU - McJimpsey, Erica L.
AU - Lebrilla, Carlito B
AU - Tobias, Herbert J.
AU - Gard, Eric E.
AU - Frank, Matthias
AU - Coffee, Keith
AU - Riot, Vincent
AU - Fergenson, David P.
PY - 2008/1
Y1 - 2008/1
N2 - An in situ method to image individual aerosol particles upon desorption/ionization in a single particle aerosol mass spectrometer using shadowgraph imaging is presented and applied directly to determine a 2D spatial distribution of 5.0 μ m particles. This new technique is complementary to previously reported methods for the determination of focused particle beam profiles and has several advantages, including a very low particle concentration requirement and the ability to collect the image of an individual particle with a correlated mass spectrum. Images are presented for 1.3, 2.1, 3.0, and 5.0 μ m polystyrene latex spheres. Particle beam profiles are presented in the directions perpendicular and parallel to the particle beam axis. These results are qualitatively compared to those of a complementary particle collection method (dusting) used at Lawrence Livermore National Laboratory to characterize aerosol beam focusing.
AB - An in situ method to image individual aerosol particles upon desorption/ionization in a single particle aerosol mass spectrometer using shadowgraph imaging is presented and applied directly to determine a 2D spatial distribution of 5.0 μ m particles. This new technique is complementary to previously reported methods for the determination of focused particle beam profiles and has several advantages, including a very low particle concentration requirement and the ability to collect the image of an individual particle with a correlated mass spectrum. Images are presented for 1.3, 2.1, 3.0, and 5.0 μ m polystyrene latex spheres. Particle beam profiles are presented in the directions perpendicular and parallel to the particle beam axis. These results are qualitatively compared to those of a complementary particle collection method (dusting) used at Lawrence Livermore National Laboratory to characterize aerosol beam focusing.
KW - Aerosol
KW - Mass spectrometry
KW - Shadowgraph
KW - Single particle imaging
UR - http://www.scopus.com/inward/record.url?scp=37849027919&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=37849027919&partnerID=8YFLogxK
U2 - 10.1016/j.jaerosci.2007.09.010
DO - 10.1016/j.jaerosci.2007.09.010
M3 - Article
AN - SCOPUS:37849027919
VL - 39
SP - 10
EP - 18
JO - Journal of Aerosol Science
JF - Journal of Aerosol Science
SN - 0021-8502
IS - 1
ER -