AASERT-93: New High-Pressure Diagnostic Technique
Abstract
As we outlined in our submitted proposal, progress towards making DFWM spectroscopy quantitative has been achieved. This work makes explicit how the magnitude of the DFWM signal depends on the polarizations of the three incident beams under the weak and strong-field limits. We have been using DFWM to investigate acetylene (C2H2) and methyl radical (CH3) molecules in an atmospheric pressure flame and in a low-pressure hot-filament reactor. To calibrate the measurement, acetylene is measured in the free flow of a C2H2/O2 mixture, and also in the pre-reaction zone of a C2H2/O2 flame-both with a fast flow rate of 40-50 m/s at the nozzle outlet of the mixture. The DFWM signal falls in the weak field limit (far from saturation), which means the DFWM signal is proportional to the products of the three incident beam intensities (IfIbIp).
Document Details
- Document Type
- Technical Report
- Publication Date
- Jul 31, 1994
- Accession Number
- ADA284943
Entities
People
- Richard Zare
Organizations
- Stanford University