The mapping of alpha-emitting radionuclides in the environment using an unmanned aircraft system
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 f...
| Autores: | , , , , , , , , , , |
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| Tipo de recurso: | artículo |
| Fecha de publicación: | 2024 |
| País: | España |
| Institución: | Universitat Politècnica de Catalunya (UPC) |
| Repositorio: | UPCommons. Portal del coneixement obert de la UPC |
| Idioma: | inglés |
| OAI Identifier: | oai:upcommons.upc.edu:2117/406499 |
| Acceso en línea: | https://hdl.handle.net/2117/406499 https://dx.doi.org/10.3390/rs16050848 |
| Access Level: | acceso abierto |
| Palabra clave: | Drones UAS Radiological detection Alpha-emitting radionuclides UAS software architecture Drons Àrees temàtiques de la UPC::Aeronàutica i espai |
| Sumario: | 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-2 was calculated. A background count rate of UV-C of around 26 ± 28 s-1 for an integration time of 0.1 s was measured during flights, which led to a decision threshold surface activity of 5 MBq cm-2. |
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