Natural background radiation at Lab 2 of Callio Lab, Pyhäsalmi mine in Finland
| Autor: | Przemysław Tokarski, Marcin Kasztelan, Jari Joutsenvaara, Katarzyna Szkliniarz, Kinga Polaczek-Grelik, M. Przybylak, Jacek Szabelski, Hannah Julia Puputti, W. Marszał, Marko Holma, Jan Kisiel, Jerzy Orzechowski, Agata Walencik-Łata, Timo Enqvist, K. Jȩdrzejczak |
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| Rok vydání: | 2020 |
| Předmět: |
Physics
Nuclear and High Energy Physics geography Felsic geography.geographical_feature_category 010308 nuclear & particles physics Bedrock Flux chemistry.chemical_element Mineralogy Radon 010403 inorganic & nuclear chemistry 01 natural sciences 0104 chemical sciences Volcano chemistry Neutron flux 0103 physical sciences Environmental radioactivity Instrumentation Background radiation |
| Zdroj: | Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 969:164015 |
| ISSN: | 0168-9002 |
| DOI: | 10.1016/j.nima.2020.164015 |
| Popis: | In operating mines, as well as in deep locations for planned scientific activities, it is essential to recognize the natural background radiation from the point of view of both occupational hazard and experimental background. Callio Lab, located in the Pyhasalmi Mine, Finland, is one of the underground laboratories participating in the Baltic Sea Underground Innovation Network (BSUIN). The characterization of the natural background radiation was done at the Lab 2, which is the deepest located in Callio Lab. It involved in-situ gamma spectrometry, thermal neutron flux measurements, radon concentration determination, and α ∕ β laboratory spectrometry of water and rock samples. At a depth of 1436 m ( ∼ 4000 m w.e.) within the felsic volcanic bedrock occurs a volcanogenic massive sulphide deposit, wherein a thermal neutron flux of (1.73 ± 0.10) × 10−5 cm−2s−1, a gamma-ray flux of 12.7 ± 1.5 cm−2s−1, a gamma-ray dose of 0.158 ± 0.029 μ Sv/h and a radon concentration of 213.3 Bq/m3 ± 11% were determined. |
| Databáze: | OpenAIRE |
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