We present the performances of a 330 g zinc molybdate (ZnMoO4) crystal working as scintillating bolometer as a possible candidate for a next generation experiment to search for neutrinoless double beta decay of Mo-100. The energy resolution, evaluated at the 2615 keV gamma-line of Tl-208, is 6.3 keV FWHM. The internal radioactive contaminations of the ZnMoO4 were evaluated as <6 mu Bq/kg (Th-228) and 27 +/- 6 mu Bq/kg (Ra-226). We also present the results of the alpha vs beta/gamma discrimination, obtained through the scintillation light as well as through the study of the shape of the thermal signal alone.

Performances of a large mass ZnMoO4 scintillating bolometer for a next generation 0νDBD experiment

FERRONI, Fernando
2012

Abstract

We present the performances of a 330 g zinc molybdate (ZnMoO4) crystal working as scintillating bolometer as a possible candidate for a next generation experiment to search for neutrinoless double beta decay of Mo-100. The energy resolution, evaluated at the 2615 keV gamma-line of Tl-208, is 6.3 keV FWHM. The internal radioactive contaminations of the ZnMoO4 were evaluated as <6 mu Bq/kg (Th-228) and 27 +/- 6 mu Bq/kg (Ra-226). We also present the results of the alpha vs beta/gamma discrimination, obtained through the scintillation light as well as through the study of the shape of the thermal signal alone.
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/20.500.12571/185
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