Accession Number : AD0617213

Title :   A BLAST WAVE DENSITY GAUGE USING BETARADIATION,

Descriptive Note : Revised ed.,

Corporate Author : SUFFIELD EXPERIMENTAL STATION RALSTON (ALBERTA)

Personal Author(s) : Dewey,J. M. ; Anson,W. A.

Report Date : 22 JUL 1963

Pagination or Media Count : 5

Abstract : A gauge has been designed to determine the gas density in blast waves by recording the attenuation of beta rays from erbium-169 using a compact detector unit and transistor amplifier. The output signal is transmitted over several thousand feet of coaxial cable and recorded as an f.m. signal on magnetic tape. Voltage and density calibration units are described. The gauge has been used to study blast waves in the 60 to 5 lb/sq in over-pressure region, and some results are presented. The present accuracy of about =10% may be improved by using a source of greater activity and by strengthening the mounting system to prevent slight changes of the source-detector geometry. (Author)

Descriptors :   (*SHOCK WAVES, DENSIMETERS), (*DENSIMETERS, SHOCK WAVES), GASES, DENSITY, BETA PARTICLES, PRESSURE, MEASUREMENT, PRESSURE GAGES, ERBIUM, ISOTOPES, CANADA, BLAST

Distribution Statement : APPROVED FOR PUBLIC RELEASE