Atmospheric Neutron Monitoring through Optical Fiber-Based Sensing
| Autor: | Camille Bélanger-Champagne, Philippe Paillet, Cosimo Campanella, Cornelia Hoehr, Julien Mekki, Sylvain Girard, Jeoffray Vidalot, Michael Trinczek, Aziz Boukenter, Ewart W. Blackmore, Youcef Ouerdane, Gaetano Li Vecchi, N. Balcon, Adriana Morana, Damien Lambert, Emmanuel Marin |
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| Přispěvatelé: | Laboratoire Hubert Curien (LHC), Institut d'Optique Graduate School (IOGS)-Université Jean Monnet - Saint-Étienne (UJM)-Centre National de la Recherche Scientifique (CNRS), TRIUMF [Vancouver], CEA (CEA/DAM), Centre National d'Études Spatiales [Toulouse] (CNES), Laboratoire Hubert Curien [Saint Etienne] (LHC), Institut d'Optique Graduate School (IOGS)-Université Jean Monnet [Saint-Étienne] (UJM)-Centre National de la Recherche Scientifique (CNRS) |
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
Optical fiber
Materials science Letter optical fibers 02 engineering and technology Radiation lcsh:Chemical technology 01 natural sciences 7. Clean energy Biochemistry Fluence Analytical Chemistry law.invention 020210 optoelectronics & photonics Optics Neutron flux law 0103 physical sciences 0202 electrical engineering electronic engineering information engineering Dosimetry lcsh:TP1-1185 Neutron optical time domain reflectometry Electrical and Electronic Engineering radiation monitor Instrumentation [PHYS]Physics [physics] Dosimeter fiber sensors dosimetry 010308 nuclear & particles physics business.industry Attenuation atmospheric neutron space Atomic and Molecular Physics and Optics 13. Climate action radiation effects business |
| Zdroj: | Sensors Sensors, 2020, 20 (16), pp.4510. ⟨10.3390/s20164510⟩ Sensors (Basel, Switzerland) Sensors, MDPI, 2020, 20 (16), pp.4510. ⟨10.3390/s20164510⟩ Sensors, Vol 20, Iss 4510, p 4510 (2020) |
| ISSN: | 1424-8220 |
| DOI: | 10.3390/s20164510⟩ |
| Popis: | The potential of fiber-based sensors to monitor the fluence of atmospheric neutrons is evaluated through accelerated tests at the TRIUMF Neutron Facility (TNF) (BC, Canada), offering a flux approximatively 109 higher than the reference spectrum observed under standard conditions in New York City, USA. The radiation-induced attenuation (RIA) at 1625 nm of a phosphorus-doped radiation sensitive optical fiber is shown to linearly increase with neutron fluence, allowing an in situ and easy monitoring of the neutron flux and fluence at this facility. Furthermore, our experiments show that the fiber response remains sensitive to the ionization processes, at least up to a fluence of 7.1 × 1011 n cm−², as its radiation sensitivity coefficient (~3.36 dB km−1 Gy−1) under neutron exposure remains very similar to the one measured under X-rays (~3.8 dB km−1 Gy−1) at the same wavelength. The presented results open the way to the development of a point-like or even a distributed dosimeter for natural or man-made neutron-rich environments. The feasibility to measure the dose caused by the neutron exposure during stratospheric balloon experiments, or during outer space missions, is presented as a case study of a potential future application. |
| Databáze: | OpenAIRE |
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