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Performance Measurements of Optical Scintillating Fibers After Repeated Exposure to Radiation
(Institute of Electrical and Electronics Engineers Inc., 2020) Wetzel J.W.; Tiras E.; Koseyan O.; Bostan N.; Bilki B.; Winn D.R.; Onel Y.
We report the preliminary results from repeated irradiations of optical scintillating fibers exposed to gamma radiation. Optical fibers degrade in radiation fields, but exhibit some recovery once removed. Study of repeated irradiations are difficult to find in the literature. We find that a UV-blue optical wavelength shifting fiber exhibits permanent degradation, the recovery is incomplete, and an interesting two step damage process that appears to affect which wavelengths are darkened at different rates. © 2020 IEEE
Results from in Situ Monitoring of Radiation Damage of Scintillation Fibers
(Institute of Electrical and Electronics Engineers Inc., 2020) Wetzel J.W.; Tiras E.; Koseyan O.; Bostan N.; Bilki B.; Winn D.R.; Onel Y.
We report preliminary results from in situ monitoring of an optical scintillating fiber while being exposed to a cesium-173 gamma radiatior. We measured the degradation of fiber transmittance across the visible spectrum as a function of time. We observed that the region below 500 nm was degraded quickly and thoroughly while wavelengths above 500 nm lost clarity more slowly. © 2020 IEEE