Accession Number : AD0485183

Title :   TIME-RESOLVED SPECTROSCOPY OF SINGLE BURNING METAL PARTICLES.

Descriptive Note : Technical rept. on Project SQUID,

Corporate Author : VIRGINIA UNIV CHARLOTTESVILLE

Personal Author(s) : Macek ,Andrej ; Semple,J. McKenzie

Report Date : JUN 1966

Pagination or Media Count : 17

Abstract : A single metal particle burning in a stream of laminarly flowing gases leaves a straight narrow trajectory. An optically fast slitless spectrograph with 80 A/mm dispersion has been assembled which focuses on the particle trajectory and thus records time-resolved spectra of such burning particles. So far, the instrument has been applied to a study of burning aluminum and titanium particles, 30 and 50 microns in diameter. In both cases, the spectrograms show metal (Al and Ti) vapor lines and bands of the respective diatomic oxides. Systematic intensity variations of these features were observed with time-resolution of less than a millisecond. Pertinence of these observations to particle combustion mechanism is briefly discussed. (Author)

Descriptors :   (*SPECTROSCOPY, METALS), (*COMBUSTION, *METALS), PARTICLES, ALUMINUM, TITANIUM, VAPORS, OXIDES, RESOLUTION, GASES, VELOCITY, BURNING RATE, GAS FLOW, LAMINAR FLOW, INSTRUMENTATION, ULTRAVIOLET SPECTRA, VISIBLE SPECTRA

Subject Categories : Atomic and Molecular Physics and Spectroscopy
      Combustion and Ignition

Distribution Statement : APPROVED FOR PUBLIC RELEASE