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ZnO-based scintillating bolometers: New prospects to study double beta decay of $^{64}$Zn by Armatol, A.; Broerman, B.; Dumoulin, L.; Giuliani, A.; Khalife, H.; Laubenstein, M.; Loaiza, P.; de Marcillac, P.; Marnieros, S.; Nagorny, S. S.; Nisi, S.; Nones, C.; Olivieri, E.; Pagnanini, L.; Pirro, S.; Poda, D. V.; Scarpaci, J. -A.; Zolotarova, A. S. is a scholarly article available to read on EtoBox.

What is ZnO-based scintillating bolometers: New prospects to study double beta decay of $^{64}$Zn about?

The first detailed study on the performance of a ZnO-based cryogenic scintillating bolometer as a detector to search for rare processes in zinc isotopes was performed. A 7.2 g ZnO low-temperature detector, containing more than 80\% of zinc in its mass, exhibits good energy resolution of baseline noise 1.0--2.7 keV FWHM at various working temperatures resulting in a low-energy threshold for the experiment, 2.0--6.0 keV. The light yield for $\beta$/$\gamma$ events was measured as 1.5(3) keV/MeV, while it varies for $\alpha$ particles in the range of 0.2--3.0 keV/MeV. The detector demonstrate an effective identification of the $\beta$/$\gamma$ events from $\alpha$ events using time-properties of only heat signals. %(namely, Rise time parameter). The radiopurity of the ZnO crystal was evaluated using the Inductively Coupled Plasma Mass Spectrometry, an ultra-low-background High Purity Ge $\gamma$-spectrometer, and bolometric measurements. Only limits were set at the level of $\mathcal{O}$(1--100) mBq/kg on activities of \Nuc{K}{40}, \Nuc{Cs}{137} and daughter nuclides from the U/Th natural decay chains. The total internal $\alpha$-activity was calculated to be 22(2) mBq/kg, with a majo

Author

Armatol, A.; Broerman, B.; Dumoulin, L.; Giuliani, A.; Khalife, H.; Laubenstein, M.; Loaiza, P.; de Marcillac, P.; Marnieros, S.; Nagorny, S. S.; Nisi, S.; Nones, C.; Olivieri, E.; Pagnanini, L.; Pirro, S.; Poda, D. V.; Scarpaci, J. -A.; Zolotarova, A. S.

Published

2023

Language

EN