Characterization of an aerodynamic lens for transmitting particles greater than 1 micrometer in diameter into the Aerodyne aerosol mass spectrometer

Williams LR, Gonzalez LA, Peck J, Trimborn D, McInnis J, Farrar MR, Moore KD, Jayne JT, Robinson WA, Lewis DK, Onasch TB, Canagaratna MR, Trimborn A, Timko MT, Magoon G, Deng R, Tang D, de la Rosa Blanco E, Prévôt ASH, Smith KA & Worsnop DR
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Williams, L. R., Gonzalez, L. A., Peck, J., Trimborn, D., McInnis, J., Farrar, M. R., Moore, K. D., Jayne, J. T., Robinson, W. A., Lewis, D. K., Onasch, T. B., Canagaratna, M. R., Trimborn, A., Timko, M. T., Magoon, G., Deng, R., Tang, D., de la Rosa Blanco, E., Prévôt, A. S. H., … Worsnop, D. R. (2013). Characterization of an aerodynamic lens for transmitting particles greater than 1 micrometer in diameter into the Aerodyne aerosol mass spectrometer. Atmospheric Measurement Techniques, 6(11), 3271-3280. https://doi.org/10.5194/amt-6-3271-2013
https://www.dora.lib4ri.ch/psi/islandora/object/psi:10264

We have designed and characterized a new inlet and aerodynamic lens for the Aerodyne aerosol mass spectrometer (AMS) that transmits particles between 80 nm and more than 3 μm in vacuum aerodynamic diameter. The design of the inlet and lens was optimized with computational fluid dynamics (CFD) modeling of particle trajectories. Major changes include a redesigned critical orifice holder and valve assembly, addition of a relaxation chamber behind the critical orifice, and a higher lens operating pressure. The transmission efficiency of the new inlet and lens was characterized experimentally with size-selected particles. Experimental measurements are in good agreement with the calculated transmission efficiency.

Details
Publication Type

Journal Article

Title

Characterization of an aerodynamic lens for transmitting particles greater than 1 micrometer in diameter into the Aerodyne aerosol mass spectrometer

Author(s)

Williams, L.R.

Gonzalez, L.A.

Peck, J.

Trimborn, D.

McInnis, J.

Farrar, M.R.

Moore, K.D.

Jayne, J.T.

Robinson, W.A.

Lewis, D.K.

Onasch, T.B.

Canagaratna, M.R.

Trimborn, A.

Timko, M.T.

Magoon, G.

Deng, R.

Tang, D.

de la Rosa Blanco, E.

Prévôt, A.S.H. (5501 Gasphase and Aerosol Chemistry)

Smith, K.A.

Worsnop, D.R.

Journal

Atmospheric Measurement Techniques

Volume

6

Issue

11

Start Page

3271

End Page

3280

Publication Year

2013

Peer Review

Yes

Collection

PSI Publications