2011
DOI: 10.1007/s10967-011-1086-y
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7Be in the lower atmosphere at a mid-latitude (40°N) during the year 2009 of a particular minimum of solar activity

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Cited by 14 publications
(2 citation statements)
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“…Beryllium 7 Be (Z=4) is a naturally occurring cosmogenic element emitting gamma radiation (477.6 keV) and with a half-life of approximately 53.2 days. Essentially, it forms mainly from spallation processes, in the lower stratosphere (~70%) and upper troposphere (~30%), as a result of a reaction of high-energy protons or neutrons, present in cosmic radiation, with light nuclei, mostly carbon 12 C, nitrogen 14 N and oxygen 16 O [4][5][6]. The transfer of 7 Be to the troposphere and the variability of its concentration in the surface boundary layer (SL) depends on the seasonal changes of such processes as: (1) intensity of stratosphere-troposphere air mass exchange, (2) vertical transport in the troposphere, (3) horizontal transport from temperate and subtropical latitudes to polar latitudes and the equatorial zone, (4) gravitational subsidence (dry deposition) and washing out by precipitation (wet deposition) [7].…”
Section: Introductionmentioning
confidence: 99%
“…Beryllium 7 Be (Z=4) is a naturally occurring cosmogenic element emitting gamma radiation (477.6 keV) and with a half-life of approximately 53.2 days. Essentially, it forms mainly from spallation processes, in the lower stratosphere (~70%) and upper troposphere (~30%), as a result of a reaction of high-energy protons or neutrons, present in cosmic radiation, with light nuclei, mostly carbon 12 C, nitrogen 14 N and oxygen 16 O [4][5][6]. The transfer of 7 Be to the troposphere and the variability of its concentration in the surface boundary layer (SL) depends on the seasonal changes of such processes as: (1) intensity of stratosphere-troposphere air mass exchange, (2) vertical transport in the troposphere, (3) horizontal transport from temperate and subtropical latitudes to polar latitudes and the equatorial zone, (4) gravitational subsidence (dry deposition) and washing out by precipitation (wet deposition) [7].…”
Section: Introductionmentioning
confidence: 99%
“…Ξεκινώντας από τους παράγοντες που παίζουν τον μικρότερο ρόλο έχουμε την ακτινοβολία η οποία προέρχεται από το 7 Βe και το 22 Να. Τα δυο ραδιονουκλίδια δημιουργούνται από την κοσμική ακτινοβολία, η οποία εισέρχεται στην ατμόσφαιρα και συγκρούεται με συστατικά αυτής και μέσα από μελέτες που έχουν παρουσιαστεί η συνολική τους συνεισφορά δεν ξεπερνά το 1 nSv h -1 (Alegría et al, 2010;Ioannidou et al, 2005Ioannidou et al, , 2011 . Τιμή η οποία συμβαδίζει και με μια πολύ μικρή αναδρομή στις τιμές που έχει μετρήσει και το Εργαστήριο Πυρηνικής Τεχνολογίας.…”
Section: εισαγωγήunclassified