Fabrication of quencher-free liquid scintillator-based, high-activity ${}^{222}$Rn calibration sources for the Borexino detector

David Bravo-Berguño, Lino Miramonti, Paolo Cavalcante +3

A reliable and consistently reproducible technique to fabricate ${}^{222}$Rn-loaded radioactive sources ($\sim$0.5-1 kBq just after fabrication) based on liquid scintillator (LS), wi…