We have recently measured a strong temperature dependence of the CO2 absorption cross-section in the ultraviolet (between 200 and 350nm). In the range between 1000 and 3000 K, both the magnitude and the spectral shape of the absorption cross-section vary with temperature providing a potential new diagnostic tool. The viability of this diagnostic strategy to determine gas temperature in combustion systems and shock-heated gases is reported here. Preliminary demonstration measurements with either a broadband light source or selected fixed-wavelength lasers in pulse-detonation engines (PDEs) and shock-heated gas mixtures have illustrated the potential to determine time-resolved temperature from CO2 absorption measurements.

© 2004 Optical Society of America

PDF Article


You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
Login to access OSA Member Subscription