Abstract
THE use of new types of detectors in the present low level of atmospheric radioactivity allows very sensitive detection of debris from the nuclear explosions still being conducted in the atmosphere and from the venting of underground tests. At this institute we use Ge(Li) gamma spectroscopy to monitor the radionuclide content of surface air in Helsinki and the monthly precipitation samples from two stations belonging to the Finnish Meteorological Office. The fallout of long-lived nuclides from the stratospheric reservoir has been observed, as well as fresh fission products from the latest Chinese nuclear tests.
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References
US Public Health Service, Radiological Health Data and Reports, 10, 171 (1969).
USAEC Report HASL-193, 1, 208–16 (1968).
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BLOMQVIST, L., ASIKAINEN, M. Tungsten-181 in Fallout in Finland. Nature 225, 58 (1970). https://doi.org/10.1038/225058a0
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DOI: https://doi.org/10.1038/225058a0
