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Proceedings Paper

Temperature and fading effects of fiber-optic dosimeters for radiotherapy
Author(s): Harald Bueker; S. Gripp; Friedrich Wolfgang Haesing
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Paper Abstract

The radiation-induced loss of short lengths (10 cm) of a lead-glass fiber is determined on-line during irradiation by Co-60 radiation as a function of time at different temperatures and dose rates. A phenomenological model describing the creation and relaxation of the color centers during and after irradiation allows an analytical function of time, temperature, and dose rate to be fitted with the experimental data. The measured values of a fiber-optic sensor using this function as a calibration curve show good agreement with the nominal value of the dose rate within the experimental accuracy.

Paper Details

Date Published: 1 August 1991
PDF: 9 pages
Proc. SPIE 1572, International Conference on Optical Fibre Sensors in China OFS(C) '91, (1 August 1991); doi: 10.1117/12.50006
Show Author Affiliations
Harald Bueker, Nuclear Research Ctr./Juelich (Germany)
S. Gripp, RWTH Aachen (Germany)
Friedrich Wolfgang Haesing, Nuclear Research Ctr./Juelich (Germany)


Published in SPIE Proceedings Vol. 1572:
International Conference on Optical Fibre Sensors in China OFS(C) '91

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