Development of On-line Instrumentation and Techniques to Detect and Measure Particulates Quarterly Report (open access)

Development of On-line Instrumentation and Techniques to Detect and Measure Particulates Quarterly Report

In the second quarter of the project, we built the liquid aerosol generator and characterized it. We also constructed and perfected light sources and detection systems. We also designed programs to simulate spherical particle MIE scattering for different wavelengths.
Date: April 1, 2003
Creator: Wu, Sheng; Palm, Steve; Tang, Yongchun & Goddard, William A., III
System: The UNT Digital Library
Development of On-line Instrumentation and Techniques to Detect and Measure Particulates Quarterly Report (open access)

Development of On-line Instrumentation and Techniques to Detect and Measure Particulates Quarterly Report

In this quarter, we have rebuilt a new multiwavelength light source which boasts over 300mW combined output from 10 different wavelengths and loss of less than 15% for each wavelength and it is much more flexible than the previous version too. Compared to the previous version, the efficiency and construction complexity have been dramatically improved for field use. We also have refined the diode pumped laser which now could give out more pulse energy than before, and this will improve the signal to noise ratio. We are also using the water jet we built in the 2nd quarter to calibrate our laser scattering outside the engine exhaust, and water jet calibration data is used to simulate the scattering results in the exhaust line.
Date: April 30, 2005
Creator: Wu, Sheng; Palm, Steve; Tang, Yongchun & Goddard, William A., III
System: The UNT Digital Library