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Article Dans Une Revue Radiocarbon Année : 2022

Experiments at Modane underground laboratory or the swan song of radiocarbon ß-counting by gas proportional counter

Résumé

ABSTRACT In 1991, a 14 C ß-counting installation with four proportional CO 2 gas counters was tested at the Modane underground laboratory, 1700 m below the summit of Pointe du Fréjus, reducing the muon flux to 4 muons per square meter and per day. With cosmic radiation attenuated by a factor of 2.10 6 , the background level of the counters was reduced by 65 to 85% while its variability was reduced by a factor of 30–80 depending on the type of counter. The dating limit of these counters extends to well beyond 60,000 years.
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hal-03400575 , version 1 (25-10-2021)

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Michel Fontugne, Christine Hatté, Michel Jaudon. Experiments at Modane underground laboratory or the swan song of radiocarbon ß-counting by gas proportional counter. Radiocarbon, 2022, 64 (3), pp.607-613. ⟨10.1017/RDC.2021.86⟩. ⟨hal-03400575⟩
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