Cobalt Glass Dosimetry

The fading of radiation-induced absorbancy of cobalt glass as a function of exposure rate and time was investigated. A linear accelerator (Linac) and a 600 curie cobalt-60 source were used. The fading of the absorbancy was found to obey an empirical relationship over four orders of magnitude of the...

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Bibliographic Details
Published in:IEEE transactions on nuclear science 1964-11, Vol.11 (5), p.155-163
Main Author: Friddell, K. D.
Format: Article
Language:English
Subjects:
Calibration
Cobalt
Dosimetry
Fading
Glass
Ionizing radiation
Linear accelerators
Linear particle accelerator
Semiconductor device measurement
Wavelength measurement
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Summary:The fading of radiation-induced absorbancy of cobalt glass as a function of exposure rate and time was investigated. A linear accelerator (Linac) and a 600 curie cobalt-60 source were used. The fading of the absorbancy was found to obey an empirical relationship over four orders of magnitude of the form A(t) = A(to) - n In t/to where A(to) is the absorbancy at time to. The slopes of the fading curves (n) were found to depend upon the initial absorbancy A(to) and wavelength. The difficulties of using a calibration curve determined with a low-exposure rate source for Linac dosimetry are briefly discussed.
ISSN:0018-9499
1558-1578
DOI:10.1109/TNS2.1964.4315486