@book{36bef315cacd48ccb97c91882a643f37,
title = "Radioactivity in the Ris{\o} District January-June 2009",
abstract = "The environmental surveillance of the Ris{\o} environment was continued in January - June 2009. The mean concentrations in air were: 0.49±0.27 μBq m–3 of 137Cs, 3.62±1.42 mBq m–3 of 7Be and 0.24±0.15 mBq m–3 of 210Pb (±1 S.D.; N = 26). The depositions by precipitation at Ris{\o} in the first half of 2009 were: 0.064 Bq m–2 of 137Cs, 381 Bq m–2 of 7Be, 22.7 Bq m–2 of 210Pb and <1.0 kBq m–2 of 3H. The average background dose rate (TLD) at Ris{\o} (Zone I) was 83 nSv h–1 compared with 65±5 nSv h–1 (±1 S.D.; N = 4) in the four zones around Ris{\o}.",
keywords = "Radioecology and tracer studies, Nuclear technologies, Ris{\o}-R-1708, Ris{\o}-R-1708(EN), Radio{\o}kologi og sporstofstudier, Nukleare teknologier",
author = "Nielsen, {Sven Poul} and Clausen, {Jytte Lene} and Arne Miller",
year = "2009",
language = "English",
isbn = "978-87-550-3790-8",
series = "Denmark. Forskningscenter Risoe. Risoe-R",
number = "1708(ed.2)(EN)",
publisher = "Danmarks Tekniske Universitet, Ris{\o} Nationallaboratoriet for B{\ae}redygtig Energi",
}