Muon-induced radioactivity in underground detectors

Induced radioactivities that generate background events in particle detectors used for low-energy (<5 MeV) neutrino detection are discussed. Production rates from cosmic-ray muons incident on detector materials at sea level and underground are estimated. The production of ${}_{}{}^7{}_{}{}^{}\mathrm{Be}$ at sea level in detector materials is shown to be a serious problem.