{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,1,17]],"date-time":"2026-01-17T02:50:09Z","timestamp":1768618209246,"version":"3.49.0"},"reference-count":26,"publisher":"MDPI AG","issue":"16","license":[{"start":{"date-parts":[[2020,8,12]],"date-time":"2020-08-12T00:00:00Z","timestamp":1597190400000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Sensors"],"abstract":"<jats:p>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 \u00d7 1011 n cm\u2212\u00b2, as its radiation sensitivity coefficient (~3.36 dB km\u22121 Gy\u22121) under neutron exposure remains very similar to the one measured under X-rays (~3.8 dB km\u22121 Gy\u22121) 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.<\/jats:p>","DOI":"10.3390\/s20164510","type":"journal-article","created":{"date-parts":[[2020,8,12]],"date-time":"2020-08-12T09:14:49Z","timestamp":1597223689000},"page":"4510","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":23,"title":["Atmospheric Neutron Monitoring through Optical Fiber-Based Sensing"],"prefix":"10.3390","volume":"20","author":[{"given":"Sylvain","family":"Girard","sequence":"first","affiliation":[{"name":"Univ Lyon, UJM, CNRS, IOGS, Laboratoire Hubert Curien, UMR 5516, 18 rue Prof. B. Lauras, 42000 Saint-Etienne, France"}]},{"given":"Adriana","family":"Morana","sequence":"additional","affiliation":[{"name":"Univ Lyon, UJM, CNRS, IOGS, Laboratoire Hubert Curien, UMR 5516, 18 rue Prof. B. Lauras, 42000 Saint-Etienne, France"}]},{"given":"Cornelia","family":"Hoehr","sequence":"additional","affiliation":[{"name":"TRIUMF, 4004 Wesbrook Mall, Vancouver, BC V6T 2A3, Canada"}]},{"given":"Michael","family":"Trinczek","sequence":"additional","affiliation":[{"name":"TRIUMF, 4004 Wesbrook Mall, Vancouver, BC V6T 2A3, Canada"}]},{"given":"Jeoffray","family":"Vidalot","sequence":"additional","affiliation":[{"name":"Univ Lyon, UJM, CNRS, IOGS, Laboratoire Hubert Curien, UMR 5516, 18 rue Prof. B. Lauras, 42000 Saint-Etienne, France"},{"name":"CEA, DAM, DIF, F-91297 Arpajon, France"}]},{"given":"Philippe","family":"Paillet","sequence":"additional","affiliation":[{"name":"CEA, DAM, DIF, F-91297 Arpajon, France"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-2368-2617","authenticated-orcid":false,"given":"Camille","family":"B\u00e9langer-Champagne","sequence":"additional","affiliation":[{"name":"TRIUMF, 4004 Wesbrook Mall, Vancouver, BC V6T 2A3, Canada"}]},{"given":"Julien","family":"Mekki","sequence":"additional","affiliation":[{"name":"CNES, 18 avenue Edouard Belin, 31400 Toulouse, France"}]},{"given":"Nicolas","family":"Balcon","sequence":"additional","affiliation":[{"name":"CNES, 18 avenue Edouard Belin, 31400 Toulouse, France"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-3767-7715","authenticated-orcid":false,"given":"Gaetano","family":"Li Vecchi","sequence":"additional","affiliation":[{"name":"Univ Lyon, UJM, CNRS, IOGS, Laboratoire Hubert Curien, UMR 5516, 18 rue Prof. B. Lauras, 42000 Saint-Etienne, France"},{"name":"European Organization for Nuclear Research (CERN), CH-1211 Geneva, Switzerland"}]},{"given":"Cosimo","family":"Campanella","sequence":"additional","affiliation":[{"name":"Univ Lyon, UJM, CNRS, IOGS, Laboratoire Hubert Curien, UMR 5516, 18 rue Prof. B. Lauras, 42000 Saint-Etienne, France"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-2150-4315","authenticated-orcid":false,"given":"Damien","family":"Lambert","sequence":"additional","affiliation":[{"name":"CEA, DAM, DIF, F-91297 Arpajon, France"}]},{"given":"Emmanuel","family":"Marin","sequence":"additional","affiliation":[{"name":"Univ Lyon, UJM, CNRS, IOGS, Laboratoire Hubert Curien, UMR 5516, 18 rue Prof. B. Lauras, 42000 Saint-Etienne, France"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-9850-5389","authenticated-orcid":false,"given":"Aziz","family":"Boukenter","sequence":"additional","affiliation":[{"name":"Univ Lyon, UJM, CNRS, IOGS, Laboratoire Hubert Curien, UMR 5516, 18 rue Prof. B. Lauras, 42000 Saint-Etienne, France"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-7210-0014","authenticated-orcid":false,"given":"Youcef","family":"Ouerdane","sequence":"additional","affiliation":[{"name":"Univ Lyon, UJM, CNRS, IOGS, Laboratoire Hubert Curien, UMR 5516, 18 rue Prof. B. Lauras, 42000 Saint-Etienne, France"}]},{"given":"Ewart","family":"Blackmore","sequence":"additional","affiliation":[{"name":"TRIUMF, 4004 Wesbrook Mall, Vancouver, BC V6T 2A3, Canada"}]}],"member":"1968","published-online":{"date-parts":[[2020,8,12]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"2715","DOI":"10.1029\/JA078i016p02715","article-title":"Calculations of neutron flux spectra induced in the Earth\u2019s atmosphere by galactic cosmic rays","volume":"78","author":"Armstrong","year":"1973","journal-title":"J. Geophys. Res."},{"key":"ref_2","doi-asserted-by":"crossref","first-page":"544","DOI":"10.1667\/RR0610.1","article-title":"Analytical Functions to Predict Cosmic-Ray Neutron Spectra in the Atmosphere","volume":"166","author":"Sato","year":"2006","journal-title":"Radiat. Res."},{"key":"ref_3","doi-asserted-by":"crossref","first-page":"3427","DOI":"10.1109\/TNS.2004.839134","article-title":"Measurement of the flux and energy spectrum of cosmic-ray induced neutrons on the ground","volume":"51","author":"Gordon","year":"2004","journal-title":"IEEE Trans. Nucl. Sci."},{"key":"ref_4","doi-asserted-by":"crossref","first-page":"1827","DOI":"10.1016\/j.microrel.2007.07.101","article-title":"Effects of atmospheric neutrons on devices, at sea level and in avionics embedded systems","volume":"47","author":"Leray","year":"2007","journal-title":"Microelectron. Reliab."},{"key":"ref_5","doi-asserted-by":"crossref","first-page":"1767","DOI":"10.1109\/TNS.2013.2255624","article-title":"Single Event Transients in Digital CMOS\u2014A Review","volume":"60","author":"Massengill","year":"2013","journal-title":"IEEE Trans. Nucl. Sci."},{"key":"ref_6","doi-asserted-by":"crossref","first-page":"374","DOI":"10.1016\/j.phpro.2017.09.035","article-title":"The Los Alamos Neutron Science Center Spallation Neutron Sources","volume":"90","author":"Nowicki","year":"2017","journal-title":"Phys. Proc."},{"key":"ref_7","unstructured":"Blackmore, E.W., Dodd, P.E., and Shaneyfelt, M.R. (2003, January 25). Improved capabilities for proton and neutron irradiations at TRIUMF. Proceedings of the 2003 IEEE Radiation Effects Data Workshop, Monterey, CA, USA."},{"key":"ref_8","doi-asserted-by":"crossref","first-page":"161","DOI":"10.1109\/TNS.2019.2952003","article-title":"Simulation and Measurements of Collimator Effects in Proton and Neutron Radiation Testing for Single-Event Effects","volume":"67","author":"Blackmore","year":"2020","journal-title":"IEEE Trans. Nucl. Sci."},{"key":"ref_9","doi-asserted-by":"crossref","first-page":"2015","DOI":"10.1109\/TNS.2012.2235464","article-title":"Radiation Effects on Silica-based Optical Fibers: Recent Advances and Future Challenges","volume":"60","author":"Girard","year":"2013","journal-title":"IEEE Trans. Nucl. Sci."},{"key":"ref_10","doi-asserted-by":"crossref","first-page":"093001","DOI":"10.1088\/2040-8986\/aad271","article-title":"Recent advances in radiation-hardened fiber-based technologies for space applications","volume":"20","author":"Girard","year":"2018","journal-title":"J. Optics"},{"key":"ref_11","unstructured":"(2020, June 10). JEDEC Standard. Available online: https:\/\/www.jedec.org\/standards-documents\/docs\/jesd-89a."},{"key":"ref_12","doi-asserted-by":"crossref","first-page":"4643","DOI":"10.1109\/JLT.2019.2915510","article-title":"Qualification and Calibration of Single Mode Phosphosilicate Optical Fiber for Dosimetry at CERN","volume":"37","author":"Girard","year":"2019","journal-title":"J. Lightw. Techn."},{"key":"ref_13","doi-asserted-by":"crossref","first-page":"126","DOI":"10.1109\/TNS.2017.2778314","article-title":"Radiation Induced Attenuation in Single-Mode Phosphosilicate Optical Fibers for Radiation Detection","volume":"65","author":"Girard","year":"2018","journal-title":"IEEE Trans. Nucl. Sci."},{"key":"ref_14","doi-asserted-by":"crossref","first-page":"898","DOI":"10.1364\/OME.5.000898","article-title":"Influence of neutron and gamma-ray irradiations on rad-hard optical fiber","volume":"5","author":"Morana","year":"2015","journal-title":"Opt. Mat. Express"},{"key":"ref_15","doi-asserted-by":"crossref","first-page":"4251","DOI":"10.1109\/TNS.2013.2284289","article-title":"Performance of Ge-doped Optical Fiber as a Thermoluminescent","volume":"60","author":"Benabdesselam","year":"2013","journal-title":"IEEE Trans. Nucl. Sci."},{"key":"ref_16","doi-asserted-by":"crossref","first-page":"299","DOI":"10.1109\/TNS.2018.2882135","article-title":"Dosimetry Mapping of Mixed Field Radiation Environment through Combined Distributed Optical Fiber Sensing and FLUKA Simulation","volume":"66","author":"Infantino","year":"2019","journal-title":"IEEE Trans. Nucl. Sci."},{"key":"ref_17","doi-asserted-by":"crossref","first-page":"1639","DOI":"10.1109\/TNS.2018.2818760","article-title":"Distributed Optical Fiber Radiation Sensing in the Proton Synchrotron Booster at CERN","volume":"65","author":"Toccafondo","year":"2018","journal-title":"IEEE Trans. Nucl. Sci."},{"key":"ref_18","unstructured":"Li Vecchi, G., Di Francesca, D., Ferraro, R., Danzeca, S., Stein, O., Kadi, Y., Brugger, M., and Girard, S. (May, January 29). Distributed Optical Fiber Radiation Sensing at CERN. Proceedings of the 9th International Particle Accelerator Conference, Vancouver, BC, Canada."},{"key":"ref_19","doi-asserted-by":"crossref","first-page":"1","DOI":"10.1016\/0022-3115(94)90003-5","article-title":"Basic physics of radiation damage production","volume":"216","author":"Robinson","year":"1994","journal-title":"J. Nucl. Mat."},{"key":"ref_20","doi-asserted-by":"crossref","first-page":"3743","DOI":"10.1063\/1.332591","article-title":"Fundamental defect centers in glass: Electron spin resonance and optical absorption studies of irradiated phosphorus-doped silica glass and optical fibers","volume":"54","author":"Griscom","year":"1983","journal-title":"J. Appl. Phys."},{"key":"ref_21","doi-asserted-by":"crossref","first-page":"3085","DOI":"10.1109\/TNS.2011.2171005","article-title":"Total ionizing dose versus displacement damage dose induced dark current random telegraph signals in CMOS image sensors","volume":"58","author":"Virmontois","year":"2011","journal-title":"IEEE Trans. Nucl. Sci."},{"key":"ref_22","doi-asserted-by":"crossref","first-page":"199","DOI":"10.1007\/BF00175313","article-title":"History of the use of Balloons in Scientific Experiments","volume":"13","author":"Pfotzer","year":"1972","journal-title":"Space Sci. Rev."},{"key":"ref_23","doi-asserted-by":"crossref","first-page":"1643","DOI":"10.1109\/TNS.2020.2982280","article-title":"Combined Temperature and Radiation Effects on Radiation-Sensitive Single-Mode Optical Fibers","volume":"67","author":"Campanella","year":"2020","journal-title":"IEEE Trans. Nucl. Sci."},{"key":"ref_24","doi-asserted-by":"crossref","first-page":"1871","DOI":"10.1016\/j.jnoncrysol.2010.11.113","article-title":"Feasibility of radiation dosimetry with phosphorus-doped optical fibers in the ultraviolet and visible domain","volume":"357","author":"Girard","year":"2011","journal-title":"J. Non-Cryst. Sol."},{"key":"ref_25","doi-asserted-by":"crossref","first-page":"1800553","DOI":"10.1002\/pssa.201800553","article-title":"Combined Temperature Radiation Effects and Influence of Drawing Conditions on Phosphorous-Doped Optical Fibers","volume":"216","author":"Girard","year":"2019","journal-title":"Phys. Stat. Solidi A"},{"key":"ref_26","doi-asserted-by":"crossref","first-page":"3750","DOI":"10.1109\/TNS.2006.886222","article-title":"14-MeV Neutron, gamma-ray, and Pulsed X-Ray Radiation-Induced Effects on Multimode Silica-Based Optical Fibers","volume":"53","author":"Girard","year":"2006","journal-title":"IEEE Trans. Nucl. Sci."}],"container-title":["Sensors"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/www.mdpi.com\/1424-8220\/20\/16\/4510\/pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,10,11]],"date-time":"2025-10-11T09:59:41Z","timestamp":1760176781000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.mdpi.com\/1424-8220\/20\/16\/4510"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2020,8,12]]},"references-count":26,"journal-issue":{"issue":"16","published-online":{"date-parts":[[2020,8]]}},"alternative-id":["s20164510"],"URL":"https:\/\/doi.org\/10.3390\/s20164510","relation":{},"ISSN":["1424-8220"],"issn-type":[{"value":"1424-8220","type":"electronic"}],"subject":[],"published":{"date-parts":[[2020,8,12]]}}}