Original scientific paper
https://doi.org/10.2478/aiht-2019-70-3336
Negative correlation between the number of sunspots and the occurrence of 7Be and 22Na in the surface air and their contribution to radiation doses
Drago Brodnik
; Jožef Stefan Institute, Ljubljana, Slovenia
Denis Glavič-Cindro
; Jožef Stefan Institute, Ljubljana, Slovenia
Matjaž Korun
; Jožef Stefan Institute, Ljubljana, Slovenia
Marijan Nečemer
orcid.org/0000-0003-0547-104X
; Jožef Stefan Institute, Ljubljana, Slovenia
Petra Maver-Modec
; Danfoss Trata d.o.o., Danfoss District Energy, Ljubljana, Slovenia
Toni Petrovič
; Jožef Stefan Institute, Ljubljana, Slovenia
Tim Vidmar
; Belgian Nuclear Research Centre, Mol, Belgium
Branko Vodenik
; Jožef Stefan Institute, Ljubljana, Slovenia
Benjamin Zorko
orcid.org/0000-0003-0164-4716
; Jožef Stefan Institute, Ljubljana, Slovenia
Abstract
This article presents yearly mean concentrations of cosmogenic radionuclides 7Be and 22Na occurring in dry and wet depositions (fallout) and aerosols. Time dependencies negatively correlated with the yearly mean number of sunspots. Activity concentrations of 7Be and 22Na in aerosols in the surface air had a correlation of near-unity. 7Be in aerosols exhibited a smoother time dependence than 22Na, implying that the production of 22Na is more sensitive to the solar activity than the production of 7Be. The effect of the measured doses on the general population through internal and external exposure to radiation from cosmogenic radionuclides was small.
Keywords
aerosols; assessed radiation doses; cosmogenic radionuclides; dry deposition; systematic influences; wet deposition
Hrčak ID:
229316
URI
Publication date:
6.12.2019.
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