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ELSEVIER
DOI: 10.1016/j.nima.2019.162395
Keywords
Neutrinoless double beta decay; CdMoO4 crystal scintillator; Cryogenic scintillating bolometer; Radioactive contaminations
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Funding
- National Natural Science Foundation of China [11625523]
- P2IO LabEx [ANR-10-LABX-0038]
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A large cylindrical cadmium molybdate crystal with natural isotopic abundance has been used to fabricate a scintillating bolometer. The measurement was performed above ground at milli-Kelvin temperature, with simultaneous readout of the heat and the scintillation light. The energy resolution as FWHM has achieved from 5 keV (at 238 keV) to 13 keV (at 2615 keV). We present the results of the alpha versus beta/gamma events discrimination. The low internal trace contamination of the CdMoO4 crystal was evaluated as well. The detector performance with preliminary positive indications proves that cadmium molybdate crystal is a promising absorber for neutrinoless double beta decay scintillating bolometric experiments with Cd-116 and Mo-100 nuclides in the next-generation technique.
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