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 / J. W., B., Bellini, F., C., B., Cardani, L., N., C., O., C., Dafinei, I., S., D.D., Ferroni, F., E., G., E. N., G., L., G., S. S., N., Orio, F., M., P., L., P., G., P., Piperno, G., S., P., E., P., et al.. - In: THE EUROPEAN PHYSICAL JOURNAL. C, PARTICLES AND FIELDS. - ISSN 1434-6044. - 72:9(2012), pp. 1-6. [10.1140/epjc/s10052-012-2142-7]
Performances of a large mass ZnMoO4 scintillating bolometer for a next generation 0νDBD experiment
BELLINI, Fabio;CARDANI, LAURA;N. Casali;DAFINEI, Ioan;FERRONI, Fernando;ORIO, FILIPPO;PIPERNO, GABRIELE;VIGNATI, Marco
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.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
