Techniques for Background Identification in the Search for Rare Processes with Crystal Scintillators

In astroparticle, nuclear and subnuclear physics, low-counting experiments play an increasingly important role in the investigation of rare processes such as dark matter, double beta decay, some neutrino low-background spectrometry. Extremely features are more required to produce detectors apparata suitable sensitivity. Over time, a great deal interest attention developing experimental techniques improve, verify maintain radiopurity these has arisen. this paper, characterization inorganic crystal scintillators (such as, e.g., NaI(Tl), ZnWO4 CdWO4) using α, β γ radioactive sources main applied field quantitatively identify contaminants highlighted; particular, we focus on scintillators, widely used investigation, considering their applications at noncryogenic temperatures framework DAMA experiment activities Gran Sasso National Laboratory INFN (National Institute for Nuclear Physics, INFN).