Characterization of an Aerodynamic Lens for Transmitting Particles Greater than 1 Micrometer in Diameter into the Aerodyne Aerosol Mass Spectrometer

Authors

L. R. Williams, Aerodyne Research, Inc.
L. A. Gonzalez, CoolChip Technologies
J. Peck, Aerodyne Research, Inc.
D. Trimborn, AeroMegt
J. McInnis, Northwestern University
M. R. Farrar, Cambridge Rindge and Latin High School
K. D. Moore, Utah State University
J. T. Jayne, Aerodyne Research, Inc.
W. A. Robinson, Aerodyne Research, Inc.
D. K. Lewis, Connecticut College
T. B. Onasch, Aerodyne Research, Inc.
M. R. Canagaratna, Aerodyne Research, Inc.
A. Trimborn, AeroMegt
M. T. Timko, Worcester Polytechnic Institute
G. Magoon, Aerodyne Research, Inc.
R. Deng, Institute of Bioengineering and Nanotechnology, Singapore
D. Tang, Dynamic Engineering Inc.
E. de la Rosa Blanco, Aerodyne Research, Inc.
A. S. H. Prévôt, Paul Scherrer Institute
K. A. Smith, Massachusetts Institute of Technology
D. R. Worsnop, Aerodyne Research, Inc.

Document Type

Article

Journal/Book Title/Conference

Atmospheric Measurement Techniques

Volume

6

Publication Date

11-28-2013

First Page

3271

Last Page

3280

Abstract

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 de-sign of the inlet and lens was optimized with computational fluid dynamics (CFD) modeling of particle trajectories. Ma-jor 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 char-acterized experimentally with size-selected particles. Exper-imental measurements are in good agreement with the calcu-lated transmission efficiency

Recommended Citation

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.; Blanco, E. de la Rosa; Prévôt, A. S. H.; Smith, K. A.; and Worsnop, D. R., "Characterization of an Aerodynamic Lens for Transmitting Particles Greater than 1 Micrometer in Diameter into the Aerodyne Aerosol Mass Spectrometer" (2013). Space Dynamics Laboratory Publications. Paper 164.
https://digitalcommons.usu.edu/sdl_pubs/164