{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,3,3]],"date-time":"2026-03-03T07:53:42Z","timestamp":1772524422983,"version":"3.50.1"},"reference-count":30,"publisher":"MDPI AG","issue":"5","license":[{"start":{"date-parts":[[2024,2,29]],"date-time":"2024-02-29T00:00:00Z","timestamp":1709164800000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/100012329","name":"European Metrology Programme for Innovation and Research (EMPIR)","doi-asserted-by":"publisher","award":["19ENV02"],"award-info":[{"award-number":["19ENV02"]}],"id":[{"id":"10.13039\/100012329","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/100012329","name":"European Metrology Programme for Innovation and Research (EMPIR)","doi-asserted-by":"publisher","award":["10.13039\/100014132"],"award-info":[{"award-number":["10.13039\/100014132"]}],"id":[{"id":"10.13039\/100012329","id-type":"DOI","asserted-by":"publisher"}]},{"name":"European Union\u2019s Horizon 2020 research and innovation program","award":["19ENV02"],"award-info":[{"award-number":["19ENV02"]}]},{"name":"European Union\u2019s Horizon 2020 research and innovation program","award":["10.13039\/100014132"],"award-info":[{"award-number":["10.13039\/100014132"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Remote Sensing"],"abstract":"<jats:p>The protection of first responders from radioactive contamination with alpha emitters that may result from a radiological accident is of great complexity due to the short range of alpha particles in the air of a few centimeters. To overcome this issue, for the first time, a system mounted on a UAS for the near-real-time remote measurement of alpha particles has been developed, tested, and calibrated. The new system, based on an optical system adapted to be installed on a UAS in order to measure the UV-C fluorescence emitted by alpha particles in the air, has been tested and calibrated, carried out in the laboratory and in field experiments using UV-C LEDs and 241Am sources. In experimental flights, the probability of detecting a point source was determined to be approximately 60%. In the case of a surface extended source, a detection efficiency per unit surface activity of 10 counts per second per MBq cm\u22122 was calculated. A background count rate of UV-C of around 26 \u00b1 28 s\u22121 for an integration time of 0.1 s was measured during flights, which led to a decision threshold surface activity of 5 MBq cm\u22122.<\/jats:p>","DOI":"10.3390\/rs16050848","type":"journal-article","created":{"date-parts":[[2024,2,29]],"date-time":"2024-02-29T08:13:44Z","timestamp":1709194424000},"page":"848","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":6,"title":["The Mapping of Alpha-Emitting Radionuclides in the Environment Using an Unmanned Aircraft System"],"prefix":"10.3390","volume":"16","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-8829-7528","authenticated-orcid":false,"given":"Pablo","family":"Royo","sequence":"first","affiliation":[{"name":"Castelldefels School of Telecommunications and Aerospace Engineering, Technical University of Catalonia, 08860 Castelldefels, Spain"}]},{"given":"Arturo","family":"Vargas","sequence":"additional","affiliation":[{"name":"Institute of Energy Technologies (INTE), Technical University of Catalonia, 08028 Barcelona, Spain"}]},{"given":"Tania","family":"Guillot","sequence":"additional","affiliation":[{"name":"Castelldefels School of Telecommunications and Aerospace Engineering, Technical University of Catalonia, 08860 Castelldefels, Spain"}]},{"given":"David","family":"Saiz","sequence":"additional","affiliation":[{"name":"Castelldefels School of Telecommunications and Aerospace Engineering, Technical University of Catalonia, 08860 Castelldefels, Spain"}]},{"given":"Jonathan","family":"Pichel","sequence":"additional","affiliation":[{"name":"Castelldefels School of Telecommunications and Aerospace Engineering, Technical University of Catalonia, 08860 Castelldefels, Spain"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-2285-8767","authenticated-orcid":false,"given":"Daniel","family":"R\u00e1bago","sequence":"additional","affiliation":[{"name":"Laboratory of Environmental Radioactivity (LaRUC), University of Cantabria, 39011 Santander, Spain"}]},{"given":"Mar\u00eda Amor","family":"Duch","sequence":"additional","affiliation":[{"name":"Institute of Energy Technologies (INTE), Technical University of Catalonia, 08028 Barcelona, Spain"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-6678-4440","authenticated-orcid":false,"given":"Claudia","family":"Grossi","sequence":"additional","affiliation":[{"name":"Institute of Energy Technologies (INTE), Technical University of Catalonia, 08028 Barcelona, Spain"},{"name":"Physics Department, Technical University of Catalonia, 08028 Barcelona, Spain"}]},{"given":"Maksym","family":"Luchkov","sequence":"additional","affiliation":[{"name":"Physikalisch-Technische Bundesanstalt (PTB), 38116 Braunschweig, Germany"}]},{"given":"Volker","family":"Dangendorf","sequence":"additional","affiliation":[{"name":"Physikalisch-Technische Bundesanstalt (PTB), 38116 Braunschweig, Germany"}]},{"given":"Faton","family":"Krasniqi","sequence":"additional","affiliation":[{"name":"Physikalisch-Technische Bundesanstalt (PTB), 38116 Braunschweig, Germany"}]}],"member":"1968","published-online":{"date-parts":[[2024,2,29]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"968","DOI":"10.1111\/bjh.16138","article-title":"Emergency response to radiological and nuclear accidents and incidents","volume":"192","author":"Gale","year":"2021","journal-title":"Br. 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