Radiopurity of an archeological Roman Lead cryogenic detector

Abstract

Archeological Roman lead (Pb) is known to be a suitable material for shielding experimental apparata in rare event searches. In the past years the intrinsic radiopurity of this material was investigated using different technologies. In this work we applied the latest advancements in cryogenic techniques to study the bulk radiopurity of a 1 cm${}^3$ sample of archeological Roman Pb. We report the lowest ever measured limit on ${}^{210}$Pb content in Roman Pb, with a concentration lower than 715 $\mu$Bq/kg. Furthermore, we also studied ${}^{238}$U and ${}^{232}$Th impurity concentrations. Our values concur with independent measurements reported in literature.

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Cited by in corpus (11)

• RES-NOVA: A new neutrino observatory based on archaeological lead
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• Full background decomposition of the CONUS experiment
• Measurement of ${}^{216}$Po half-life with the CUPID-0 experiment
• Deep-underground search for the decay of 180m-Ta with an ultra-low-background HPGe detector
• A new dark matter direct search based on archaeological Pb
• CUORE Opens the Door to Tonne-scale Cryogenics Experiments
• Results on ${}^{82}$Se $2\nu \beta \beta$ with CUPID-0 Phase I
• Online triggers for supernova and pre-supernova neutrino detection with cryogenic detectors
• A rapid low-background assay of ${}^{210}$Pb in archaeological lead
• Neutrino NSI in archaeological Pb