LOW DOSE MEASUREMENTS WITH MODIFIED SILVER-PHOSPHATE GLASS DOSIMETER READER

摘要

Greater precision in measuring gamma-ray doses below 1.0 R with silver-activated phosphate glass is achieved by modification of the Toshiba FGD-3B Fluoro Glass Dosimeter Reader. Twenty-five mill roentgen (25 mR) was read on 6 mm x 6 urn x 3.3mm 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.nFluor metric 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.