Über Rußbildung des Azetylens hinter Reflektierten Stoßwellen

Abstract

The time-history of particle-diameter and number density of acetylene soot produced in gas phase in the reflected shock wave were obtained from light absorption signals of two He–Ne-lasers (λ=3.39 µm and 0.6328 µm). The observed diameter was between 0.1 and 0.4 µm. The phase change temperature of soot for various vapor pressure (initial pressure of acetylene) was obtained from the simplified model for soot formation. From this temperature the latent heat and the surface tension of acetylene soot were estimated from the simplified model for soot production. The values were 710 kJ/mol for the latent heat and 3300 dyne/cm for surface tension.