Accession Number : ADP004540

Title :   Application of Fluorescence to Measurement of Surface Temperature in Solid Propellants,

Corporate Author : SYSTEMS RESEARCH LABS INC DAYTON OH

Personal Author(s) : Goss,L. P. ; Smith,A. A.

Report Date : OCT 1984

Pagination or Media Count : 9

Abstract : Three rare-earth-ion crystals were shown to be good candidates for surface-temperature measurements on energetic materials by laser-induced fluorescence. Dy(+3).LaF3 displays a thermalization process with an energy gap of 1070/cm, resulting in a fluorescence intensity change of approx. 200 over a 700-K temperature range. Cr(3):Al2O3 (ruby) displays an extreme temperature sensitivity to the life-time of the R-fluorescence lines. The lifetimes are observed to change by a factor of approx. 230 over a 500-K temperature range. Er(+3):CaF2 shows a temperature sensitivity of 20 over a temperature range of 700 K, as measured by the lifetime of its lifetime of its E(4S3/2) fluorescence line.

Descriptors :   *SOLID PROPELLANTS, *SURFACE TEMPERATURE, *LASER INDUCED FLUORESCENCE, MEASUREMENT, CRYSTALS, IONS, CHROMIUM, DYSPROSIUM, ERBIUM, RADIANT INTENSITY, THERMAL PROPERTIES, SENSITIVITY, SPECTRAL LINES, SYMPOSIA

Distribution Statement : APPROVED FOR PUBLIC RELEASE