Accession Number : AD0274515

Title :   INVESTIGATION OF CONDENSATION PROCESSES BEHIND NORMAL SHOCKS BY OPTICAL METHODS--A FEASIBILITY ANALYSIS

Corporate Author : CORNELL UNIV ITHACA N Y

Personal Author(s) : TIMNAT,Y. ; BAUER,S.H.

Report Date : MAR 1962

Pagination or Media Count : 1

Abstract : Detection of solid particles formed in a shock tube by thermal decomposition, methods for determining the induction time for the initial condensation, the number of particles formed per unit volume, and their rate of growth are discussed. Optical methods of detection seem most promising. The use of the index of refraction, the emissivity of light, and the amount of latent heat released are considered. Examples of substances proposed for study are C6H6, which yields C particles upon thermal decomposition in a mild shock, Pb(C2H5)4 which generates Pb particles as well as some C, and chromium carbonyl, which gives only Cr. The principles of light scattering by small particles with their application to condensation problems in a shock tube are considered. (Author)

Descriptors :   *CONDENSATION, *GASES, *OPTICAL ANALYSIS, *PARTICLES, DETECTION, FEASIBILITY STUDIES, INTENSITY, LIGHT, MEASUREMENT, PHOTOELECTRIC EFFECT, REFRACTIVE INDEX, SCATTERING, SHOCK TUBES, SOLIDS, THEORY

Distribution Statement : APPROVED FOR PUBLIC RELEASE