Astronomy and Astrophysics – Astrophysics
Scientific paper
Oct 1978
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1978sci...202..215r&link_type=abstract
Science, Volume 202, Issue 4364, pp. 215-217
Astronomy and Astrophysics
Astrophysics
14
Scientific paper
The Grenoble cyclotron has been used as a mass spectrometer to measure ratios of beryllium-10 to beryllium-9 of 10-8, 10-9, and 10-10 in standardized beryllium oxide samples. Similar measurements can be used to determine cosmogenic beryllium-10 (half-life, 1.5 × 106 years) profiles in various geophysical reservoirs such as sea sediments and polar ice. This procedure can be used either to date such samples or to give information about geophysical and astrophysical phenomena that have influenced the beryllium-10 production rate in the past.
Fruneau M.
Loiseaux J.-M.
Raisbeck Grant M.
Yiou Françoise
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