Investigation of the molybdenum oxide purification for the AMoRE experiment
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The presented study reports on the purification of molybdenum oxide, which is one of the important tasks of the Advanced Mo based Rare process Experiment in searching for the neutrinoless double beta (0νββ) decay of 100Mo. Purified MoO3 powder is used as initial material for further growth of radiopure monocrystals. As purification technique, double sublimation, co-precipitation with calcium chloride carrier, and precipitation of polyammonium molybdate from acidic media were used. Concentrations of impurities like Sr, Ba, Pb, Th and U were measured by ICP-MS and radioactive isotopes were checked by a HPGe detector at the YangYang underground Laboratory in Korea.
KeywordsNeutrinoless double beta (0νββ) decay Molybdenum Sublimation Wet chemistry purification
We thank J.S. Choi and D. S. Leonard for ICP-MS measurements, and W.G. Kang and G.W. Kim for the HPGe measurements. This research was funded by the Institute for Basic Science (Korea) under project code IBS-R016-D1.
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