Supramicrometer particle shadowgraph imaging in the ionization region of a single particle aerosol mass spectrometer

George R. Farquar, Paul T. Steele, Erica L. McJimpsey, Carlito B Lebrilla, Herbert J. Tobias, Eric E. Gard, Matthias Frank, Keith Coffee, Vincent Riot, David P. Fergenson

Research output: Contribution to journalArticle

4 Citations (Scopus)

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 languageEnglish (US)
Pages (from-to)10-18
Number of pages9
JournalJournal of Aerosol Science
Volume39
Issue number1
DOIs
StatePublished - Jan 2008

Fingerprint

Particle beams
Mass spectrometers
Aerosols
Particles (particulate matter)
Ionization
ionization
spectrometer
aerosol
Imaging techniques
Latexes
Spatial distribution
Desorption
Polystyrenes
particle
desorption
spatial distribution

Keywords

  • Aerosol
  • Mass spectrometry
  • Shadowgraph
  • Single particle imaging

ASJC Scopus subject areas

  • Atmospheric Science
  • Environmental Science(all)

Cite this

Farquar, G. R., Steele, P. T., McJimpsey, E. L., Lebrilla, C. B., Tobias, H. J., Gard, E. E., ... Fergenson, D. P. (2008). Supramicrometer particle shadowgraph imaging in the ionization region of a single particle aerosol mass spectrometer. Journal of Aerosol Science, 39(1), 10-18. https://doi.org/10.1016/j.jaerosci.2007.09.010

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 journalArticle

Farquar, GR, Steele, PT, McJimpsey, EL, Lebrilla, CB, Tobias, HJ, Gard, EE, Frank, M, Coffee, K, Riot, V & Fergenson, DP 2008, 'Supramicrometer particle shadowgraph imaging in the ionization region of a single particle aerosol mass spectrometer', Journal of Aerosol Science, vol. 39, no. 1, pp. 10-18. https://doi.org/10.1016/j.jaerosci.2007.09.010
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. / Supramicrometer particle shadowgraph imaging in the ionization region of a single particle aerosol mass spectrometer. In: Journal of Aerosol Science. 2008 ; Vol. 39, No. 1. pp. 10-18.
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