Radioassay of the materials for AMoRE-II experiment

radiopurity Physics QC1-999 0103 physical sciences double beta decay ICP-MS HPGe 01 natural sciences radioassay
DOI: 10.3389/fphy.2024.1362209 Publication Date: 2024-06-11T16:56:49Z
ABSTRACT
The AMoRE-II experiment will search for the 0 νββ decay of 100 Mo nuclei using molybdate crystal scintillators, operating at milli-Kelvin (mK) temperatures, with a total 80 kg Mo. background goal is 10 –4 counts/keV/kg/year in region interest around Q-value 3,034 keV. To achieve this level, rate signals arising from emissions produced by decays radioactive impurities detector and shielding materials must be strictly controlled. do this, concentrations such are measured controlled through selection purification. In paper, we describe design construction used to build system, including active passive shielding, cryostat, holders instrumentation, report on measurements within candidate selected materials.
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