Infrared Optical Property Measurement Techniques. Definition and Preliminary Design
Final rept. Aug 1985-Mar 1986
PHYSICAL SCIENCES INC ANDOVER MA
Pagination or Media Count:
An experimental design for the determination of the complex indices of refraction for small particles as a function of wavelength and temperature is presented. The temperature ranges of interest are 300 to 500 K and 1000 to 3000 K for wavelengths spanning 0.3 to 10 micrometers. Particulate species are pure form Al2O3, ZrO2, MgO, C, and ZrC in addition to rocket exhaust derived particles the radii for these particles will span 0.1 to 10 micrometers. Proposed high temperature experiments would be performed in a shock tube. A particle injector conceptual design for producing particulate dispersions over short lengths of the shock tube is presented and would be used in conjunction with the experiments. Optical response and sensitivity to index of refraction of the particulate species is investigated in detail and used to guide the optical diagnostic design. Finally, a methodology for determining the complex indices of refraction based upon experimental results is presented with the recommendations for the optical diagnostic package.
- Infrared Detection and Detectors
- Combustion and Ignition