Optical Fiber Radiation Detector and Real-Time Dosimeter.
Patent, Filed 11 May 81, patented 1 Nov 83,
DEPARTMENT OF THE NAVY WASHINGTON DC
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An optical fiber dosimeter for monitoring by luminescence the presence of ionizing radiation and measuring a cumulative dose from around reactors, accelerators and waste storage areas. A length of silica core optical fiber in the presence of ionizing radiation has been found to luminesce in two distinct emission bands, one with a peak around 450 nm blue and the other with a peak around 650 nm red. The intensity of the red luminescence is proportional to the intensity of ionizing radiation on the fiber and the accumulated ionizing radiation on the fiber and the accumulated ionizing radiation history or dosage on the fiber. A device constructed according to the invention may be employed to surround an area of a human body tissue or organ undergoing radiation treatment as an aid in directing the radiation.
- Fiber Optics and Integrated Optics