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EXPERIMENTS AT MODANE UNDERGROUND LABORATORY OR THE SWAN SONG OF RADIOCARBON ß-COUNTING BY GAS PROPORTIONAL COUNTER
Published online by Cambridge University Press: 18 October 2021
Abstract
In 1991, a 14C ß-counting installation with four proportional CO2 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 2.106, 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.
Keywords
- Type
- Technical Note
- Information
- Radiocarbon , Volume 64 , Issue 3: Seven Decades of Radiocarbon Dating: Remembering the Pioneers & Looking Towards the Future. Part 1 of 2 , June 2022 , pp. 607 - 613
- Copyright
- © The Author(s), 2021. Published by Cambridge University Press for the Arizona Board of Regents on behalf of the University of Arizona
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