Temperature and fading effects of fiber-optic dosimeters for radiotherapy

Harald Bueker; S. Gripp; Friedrich Wolfgang Haesing

doi:10.1117/12.50006

1 August 1991 Temperature and fading effects of fiber-optic dosimeters for radiotherapy

Harald Bueker, S. Gripp, Friedrich Wolfgang Haesing

Proceedings Volume 1572, International Conference on Optical Fibre Sensors in China OFS(C) '91; (1991) https://doi.org/10.1117/12.50006
Event: International Conference on Optical Fibre Sensors in China, 1991, Wuhan, China

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.

Citation Download Citation

Harald Bueker, S. Gripp, and Friedrich Wolfgang Haesing "Temperature and fading effects of fiber-optic dosimeters for radiotherapy", Proc. SPIE 1572, International Conference on Optical Fibre Sensors in China OFS(C) '91, (1 August 1991); https://doi.org/10.1117/12.50006

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