Gamma-ray analysis of atmospheric dust samples

Details Gamma-ray analysis of atmospheric dust samples Gamma-ray analysis of atmospheric dust samples

Apr 1960

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1960gecoa..19...85h&link_type=abstract

Geochimica et Cosmochimica Acta, vol. 19, Issue 2, pp.85-93

Physics

Scientific paper

The presence of nuclear weapon debris in the air over Canada following the tests in the spring of 1957 and 1958 was demonstrated by -ray spectral studies. Peaks from fission products Zr 95 , Nb 95 , Ru 103 , Ce 141 , Ce 144 and Cs 137 , with half-lives of several days and longer, were identified. The same peaks were found in a sample of house dust. Very long-lived fission products such as caesium-137 were not of sufficient activity to permit identification until the samples had decayed for several months.

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