On concentration of ${}^{42}$Ar in the Earth's atmosphere

Abstract

Data from the DBA liquid argon ionization chamber experiment have been used to obtain an estimate on the concentration of ${}^{42}$Ar in the Earth's atmosphere, $6.8_{-3.2}^{+1.7}\cdot 10^{-21}$ atoms of ${}^{42}$Ar per atom of ${}^{40}$Ar corresponding to the ${}^{42}$Ar activity of $1.2_{-0.5}^{+0.3}$ $\mu$Bq per cubic meter of air.

arXiv comment12 pages, 5 figures

References in corpus (2)

• The background in the neutrinoless double beta decay experiment GERDA
• Measurements of the ion fraction and mobility of alpha and beta decay products in liquid xenon using EXO-200

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• Cosmogenic production of ${}^{39}$Ar and ${}^{37}$Ar in argon
• Some considerations about cosmogenic production of radioactive isotopes in Ar as target for the next neutrino experiments
• Spectral shapes of forbidden argon beta decays as background component for rare-event searches