Precision Measurement of the Specific Activity of ${}^{39}$Ar in Atmospheric Argon with the DEAP-3600 Detector

P. Adhikari, R. Ajaj, M. Alpízar-Venegas +147

The specific activity of the beta decay of ${}^{39}$Ar in atmospheric argon is measured using the DEAP-3600 detector. DEAP-3600, located 2 km underground at SNOLAB, uses a total of (…