Measurement of the Combustion Temperature of a Solid Propellant by the Cars Method

To measure the solid‐propellant combustion temperature, a procedure was used based on examination of the temperature dependence of the Q‐branch of the coherent anti‐Stokes Raman scattering (CARS) spectrum due to nitrogen contained in combustion products. The measurements were carried out at a pressure of 4 MPa, under which the spectrum demonstrated a substantial overlap between spectral lines. CARS intensities at two frequencies were registered; their ratio was used to determine the combustion temperature of a stoichiometric ammonium dinitramide–polycaprolacton mixture.