Accession Number : AD0622636

Title :   LOW DOSE MEASUREMENTS WITH MODIFIED SILVERPHOSPHATE GLASS DOSIMETER READER,

Corporate Author : NAVAL RADIOLOGICAL DEFENSE LAB SAN FRANCISCO CALIF

Personal Author(s) : Menkes,Cirel K.

Report Date : 30 AUG 1965

Pagination or Media Count : 44

Abstract : Greater precision in measuring gamma-ray doses below 1.0 R with silver-activated phosphate glass was achieved by modification of the Toshiba FGD-3B Fluoro Glass Dosimeter Reader. Twenty-five milliroentgen (25 mR) was read on 6 mm x 6 mm x 3.3 mm glass square dosimeters with an accuracy of about 5%, suggesting that results of this precision should be obtainable with more sensitive glass dosimeters down to 10 mR or less. Fluorimetric emission spectra and measurements made after replacement of the red filter by a yellow filter in the Toshiba reader indicate that the predose of Toshiba silver phosphate glass has a relatively significant fluorescence in the region of the irradiation-induced fluorescence. (Author)

Descriptors :   (*DOSIMETERS, PHOSPHATE GLASS), SILVER, FLUORESCENCE, OPTICAL FILTERS, LIGHT TRANSMISSION, GAMMA RAYS, GAMMA RAY SPECTRA, DOSE RATE

Distribution Statement : APPROVED FOR PUBLIC RELEASE