Solid technical work is great—but the ability to communicate effectively about that work is equally critical. To acknowledge the importance of good communication—and maintain a high quality of presentation at its technical meeting—SAE International established the SAE Excellence in Oral Presentation award in 1972. This year, two Sandians, Joseph Oefelein and Lyle Pickett, were honored…
By Robert Barlow Allowing single-shot measurements of all major species in nonsooting flames of simple fuels, such as H2 and CH4, spontaneous Raman scattering has been a key CRF laser diagnostic technique for fundamental turbulent-combustion studies. However, laser-induced fluorescence from soot precursors tends to interfere significantly with Raman scattering signals—limiting this method’s utility. Such fluorescence…
CRF researcher Leonid Sheps has developed a new spectroscopic method, Time-Resolved Broadband Cavity-Enhanced Absorption Spectroscopy (TR-BB-CEAS). The new technique is capable of following the time evolution of transient intermediates as they are produced and consumed in a gas-phase chemical reaction by monitoring their absorption of near-UV to visible light (300–700 nm). Existing absorption techniques can…