Photoacoustic Soot Spectrometer (PASS) Instrument Handbook

Technical Report · Thu Jan 17 00:00:00 EST 2013

DOI:https://doi.org/10.2172/1226795· OSTI ID:1226795

Dubey, M ^[1]; Springston, S ^[2]; Koontz, A ^[3]; Aiken, A ^[1]

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1. Los Alamos National Laboratory
2. Brookhaven National Laboratory
3. Pacific Northwest National Laboratory

The photoacoustic soot spectrometer (PASS) measures light absorption by aerosol particles. As the particles pass through a laser beam, the absorbed energy heats the particles and in turn the surrounding air, which sets off a pressure wave that can be detected by a microphone. The PASS instruments deployed by ARM can also simultaneously measure the scattered laser light at three wavelengths and therefore provide a direct measure of the single-scattering albedo. The Operator Manual for the PASS-3100 is included here with the permission of Droplet Measurement Technologies, the instrument’s manufacturer.

• Research Organization: DOE Office of Science Atmospheric Radiation Measurement (ARM) Program (United States); Los Alamos National Lab. (LANL), Los Alamos, NM (United States); Brookhaven National Lab. (BNL), Upton, NY (United States); Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
• Sponsoring Organization: USDOE Office of Science (SC), Biological and Environmental Research (BER)
• DOE Contract Number: DE-AC05-7601830
• OSTI ID: 1226795
• Report Number(s): DOE/SC-ARM/TR-123
• Country of Publication: United States
• Language: English