Radiation measurement by compensation method using optic fiber scintillator with passive fiber cable

The optical fiber scintillator(OFS) of Ce+3 (cerium)activator detects radiation by converting the radiation energy into visible light. In the case of gamma rays,photoelectrons are generated by the interaction with glass materials (photoelectric effect, calculation effect, electron pair generation) in OFS, and this photoelectron loses energy and generates light. The neutrons detect charged particles from the (n, α) nuclear reaction of 6Li and neutrons in OFS. If a system for transmitting light from an OFS through a passive fiber cable(PFS) is developed, it is not necessary to attach electronic equipment for signal detection in a high radiation zone, thus preventing equipment damage due to radiation exposure. However, since PFC also generates light due to interaction with radiation, a method of detecting only the OFS signal is necessary. In this paper, a study was made using PFC as a transmission medium of light when using OFS for radiation measurement. The compensation method showed that 99% or more of the effects of PFC were eliminated, and linearity for 4 different OFSs was excellent within 5%. Therefore, the OFS can be used for measurement of high-radiation at a very small point, because it can utilize various detection sensing areas by simple manufacturing and does not need electronic equipment for transmitting OFS signals