most citedDiscovery of underground argon with low level of radioactive 39Ar and possible applications to WIMP dark matter detectors

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astro-ph2007★ 14 cited

Discovery of underground argon with low level of radioactive 39Ar and possible applications to WIMP dark matter detectors

C. Galbiati, R. Purtschert

We report on the first measurement of 39Ar in argon from underground natural gas reservoirs. The gas stored in the US National Helium Reserve was found to contain a low level of 39…