archPbMoO4 scintillating bolometer as detector to searches for the neutrinoless double beta decay of 100Mo

7th Young Researcher Meeting

Nagorny, S.^1,2 ; Pattavina, L.^2 ; Kosmyna, M.B.^3 ; Nazarenko, B.P.^3 ; Nisi, S.^2 ; Pagnanini, L.^1 ; Pirro, S.^2 ; Schaffner, K.^1 ; Shekhovtsov, A.N.^3

INFN, Gran Sasso Science Institute, L'Aquila

I-67100, Italy^1

INFN, Laboratori Nazionali Del Gran Sasso, Assergi

I-67100, Italy^2

Institute for Single Crystals of NAS of Ukraine, Kharkov

61001, Ukraine^3

关键词: Chemical impurities;    Czochralski technique;    Energy resolutions;    Neutrinoless double-beta decays;    Particle identifications;    Production yield;    Scintillating Bolometers;    Scintillating crystals;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/841/1/012025/pdf
DOI  :  10.1088/1742-6596/841/1/012025

来源: IOP

【 摘 要 】

ThearchPbMoO4scintillating crystal has been produced from archaeological lead for the first time. The advanced technique for deep purification of lead against chemical impurities was used resulting in 99.9995% purity level of final material. ThearchPbMoO4crystal was characterized by means of cryogenics bolometric measurements and demonstrates excellent performances as a scintillating bolometer. The energy resolution (0.3% at 1462 keV of40K), the high light yield (5.2 keV/MeV for γs, and 1.2 keV/MeV for α particles) and the highly efficient particle identification achieved with this detector, representing the high quality of the crystal. As a final proof for the feasibility of thearchPbMoO4crystal as a promising detector to search for the neutrinoless double β-decay of100Mo, the crystal should be produced using the LTG Czochralski technique to prevent the possible contamination during the crystal growth and to increase the production yield.