An experiment to study 2β decay processes in 106Cd using a 106CdWO4 crystal scintillator of mass 215.4 g enriched in 106Cd to 66% is ongoing in the DAMA/R&D setup at the LNGS of INFN (Italy). The events in the 106CdWO4 detector are recorded in (anti)coincidences with two large-volume CdWO4 scintillation counters. The design of the detector system, the calibration and background measurements, methods and results of data analysis to determine key detector characteristics are described. The experimental data are compared with Monte Carlo simulation results, and a background model is constructed. The radioactive contamination of the setup components is studied. The limit on the half-life for the 2νεβ + decay in 106Cd was preliminarily estimated as lim T1/2 = 3.5×1021, which approaches the theoretical expectations for this process.
Leoncini, A., Belli, P., Bernabei, R., Cappella, F., Caracciolo, V., Cerulli, R., et al. (2024). Current status of the search for 2β decay of 106Cd using 106CdWO4 crystal scintillator. In R.H. Osvaldo Civitarese (a cura di), WORKSHOP ON THE CALCULATION OF DOUBLE-BETA-DECAY MATRIX ELEMENTS: MEDEX’23. AIP Publishing [10.1063/5.0204922].
Current status of the search for 2β decay of 106Cd using 106CdWO4 crystal scintillator
Leoncini, A.
;Caracciolo, V.;Merlo, V.;
2024-01-01
Abstract
An experiment to study 2β decay processes in 106Cd using a 106CdWO4 crystal scintillator of mass 215.4 g enriched in 106Cd to 66% is ongoing in the DAMA/R&D setup at the LNGS of INFN (Italy). The events in the 106CdWO4 detector are recorded in (anti)coincidences with two large-volume CdWO4 scintillation counters. The design of the detector system, the calibration and background measurements, methods and results of data analysis to determine key detector characteristics are described. The experimental data are compared with Monte Carlo simulation results, and a background model is constructed. The radioactive contamination of the setup components is studied. The limit on the half-life for the 2νεβ + decay in 106Cd was preliminarily estimated as lim T1/2 = 3.5×1021, which approaches the theoretical expectations for this process.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
