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Journal de Physique Lettres 40, 12 (1979) 241-244
26Al measurement with a cyclotron
G.M. Raisbeck1, F. Yiou1, C. Stephan2

We have used the accelerator facility ALICE to count directly small quantities (∼ 5 × 109 atoms) of the isotope 26Al (half-life = 7.3 x 105 years). We discuss how measurement of this nuclide in marine sediments, in conjunction with similar measurements of 10 Be (half-life = 1.5 × 106 years), can be used as an absolute dating technique. The method used here to avoid interference from the isobar 26Mg is applicable to a number of other isobars of interesting long lived nuclides, thus expanding the potential application of the accelerator technique.
1 :  CSNSM - Centre de Spectrométrie Nucléaire et de Spectrométrie de Masse
2 :  IPNO - Institut de Physique Nucléaire d'Orsay
Physique/Articles anciens

beta decay – geochronology – geophysical techniques – nuclei with mass number 20 to 38 – radioactive dating – radioactive decay periods – sediments – sup 26 Al – marine sediments – absolute dating technique – isobars – long lived nuclides – accelerator technique
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