We present ultrabroadband two-beam femtosecond/picosecond coherent Raman spectroscopy on the ro-vibrational spectra of CO2 and O2, applied for multispecies thermometry relative concentration measurements in a standard laminar premixed hydrocarbon flame. The experimental system employs fs-laser-induced filamentation to generate compressed supercontinuum in-situ, resulting ∼24 fs full-width-at-ha...

Despite the frequent use of freon-22 (e.g. to measure pulmonary blood flow), there is no agreement on its solubility in water or body fluids. The values in the literature vary, often quoted without reference to measurement or identification as Ostwald or Bunsen coefficients. We used a Schölander apparatus and determined the Bunsen solubility coefficient (mlgas.(mlfluid.atmosphere)-1) at 37 degr...

The first application of atomic absorption spectra to chemical analysis was made as long ago as 1860 by Gustav Robert Kirchhoff (1824-87), who demonstrated the presence of various elements in the solar atmosphere. Together with Robert Wilhelm Bunsen (181199), he showed shortly afterwards that atomic spectra, whether in emission or absorption, could be the basis of a powerful method of chemical ...

Flamelet models of turbulent premixed combustion assume that (a) turbulent-transport and processes can be decoupled treated independently, suggesting preheat reaction zones remain layer-like do not become highly fragmented and/or distributed. By further assuming (b) the scalar-structure (e.g. distribution thermochemical quantities, like species mass fraction, vs. a control variable, such as pro...