期刊
ATMOSPHERIC MEASUREMENT TECHNIQUES
卷 6, 期 11, 页码 3271-3280出版社
COPERNICUS GESELLSCHAFT MBH
DOI: 10.5194/amt-6-3271-2013
关键词
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资金
- NSF Small Business Innovation Research Program [0216220]
- EPA Small Business Innovation Research Program [EP-D-05-057]
- DOE Small Business Innovation Research Program [DE-SC0001673]
- NASA Small Business Innovation Research Program [NNX10CA32C]
- US DOE GCEP SURE program
- NSF RET program
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 mu m 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.
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