Accession Number : AD0674609

Title :   PHOTO-OPTICAL MEASUREMENTS ON HIGH-ALTITUDE BARIUM RELEASES.

Descriptive Note : Final rept. 1 Jul 67-31 May 68,

Corporate Author : TECHNICAL OPERATIONS INC BURLINGTON MASS

Personal Author(s) : Kofsky,Irving L. ; Trowbridge,Christian A.

Report Date : 28 JUN 1968

Pagination or Media Count : 38

Abstract : Radiometrically calibrated photographs of the growth of neutral and ionized species resulting from the explosive release of barium at latitudes between 156 and 226 km were taken, reduced, and analyzed. Inventories of ions and atoms were calculated from the integrated spectral surface brightnesses of the sunlight scattering from the particles, and the data prepared for measurement of the transverse and longitudinal (to the magnetic field) diffusion coefficients of the ions. The phenomena accompanying exposure releases of barium at speeds comparable to the escape velocity have been considered theoretically; it was found that measurable numbers of ions will become trapped in the geomagnetic field. Other program tasks included microphotometric analysis of photographs of faint shocks, calibration of camera controls and interframe timing, development of a digital computer program for calculating horizontal wind shears, and setup and operation of photometric equipment for the field measurements. (Author)

Descriptors :   (*UPPER ATMOSPHERE, *BARIUM), ATMOSPHERIC SOUNDING, GAS IONIZATION, PHOTOGRAPHIC ANALYSIS, SOLAR RADIATION, SCATTERING, GEOMAGNETISM, SHOCK WAVES, BRIGHTNESS

Subject Categories : Atmospheric Physics

Distribution Statement : APPROVED FOR PUBLIC RELEASE