Real-time dosimeter targeted to nuclear applications

dc.contributor.author Correia,A en
dc.contributor.author Carla Carmelo Rosa en
dc.contributor.author Santos,PMP en
dc.contributor.author Falcao,AN en
dc.contributor.author Lorentz,K en
dc.date.accessioned 2017-11-20T14:29:55Z
dc.date.available 2017-11-20T14:29:55Z
dc.date.issued 2014 en
dc.description.abstract An intrinsic fiber optic dosimeter (FOD) targeted to nuclear applications is presented. The proposed real-time dosimeter provides dose information based on the historic record over time of the effects of ionizing radiation on single-and multi-mode pure silica fibers, and also on PMMA plastic fibers. The effect of Co-60 gamma irradiation on optical links based on silica and plastic fibers were assessed, considering thermal environment effects over a wide range of variation of the operating parameters. Cerenkov radiation and radiation-induced absorption effects were in focus. The corresponding distortion and spectral transmission degradation were evaluated over wide range of the operating parameters. Radiation induced attenuation (RIA) has shown a spectral band dependent behaviour up to 840 Gy dose levels. The performance of different fibers was assessed against the performance of non-irradiated fibers. From the measurements of dose rate and total dose imparted by ionizing radiation in the fibers we verified that fibers with radiation resistance issues showed wavelength-dependent radiation sensitivity increasing with dose rate. Upon evaluation of correlations between the total dose, the induced loss at various dose rates and different wavelengths, it was concluded that intrinsic fiber dosimeters can be used for dose rates in the range 4 - 28 Gy/min., typical of severe radiation environments. en
dc.identifier.uri http://repositorio.inesctec.pt/handle/123456789/3713
dc.identifier.uri http://dx.doi.org/10.1117/12.2063832 en
dc.language eng en
dc.relation 4318 en
dc.rights info:eu-repo/semantics/openAccess en
dc.title Real-time dosimeter targeted to nuclear applications en
dc.type conferenceObject en
dc.type Publication en
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