Measurement of the 214Bi spectrum in the energy region around the Q-value of 76Ge neutrinoless double-beta decay

摘要

In this work we present the results obtained measuring the 214Bi spectrumfrom a 226Ra source with a high purity germanium detector. Our attention wasmostly focused on the energy region around the Q-value of 76Ge neutrinolessdouble-beta decay (2039.006 keV). The results of this measurement are stronglyrelated to the first indication for the neutrinoless double beta decay of 76Ge,given by a recent analysis \cite{Evidence,KK02-PN,KK02-Found,KK-BigArt02} ofthe data collected during ten years of measurements from the HEIDELBERG-MOSCOWexperiment.