Development of enriched Cadmium Tungstate Crystal Scintillators to
search for ββ decay processes in 106Cd
2008 - Main activities:
Purification of cadmium enriched in 106Cd to 68% performed by vacuum
distillation in graphite apparatus. The level of obtained purity satisfies
the requirements to use the raw materials for growing.
Raw materials to grow CdWO4 crystal scintillators produced
by the NeoChem company (Moscow, Ru).
336.3 g of 106CdWO4 compound obtained from 104.92 g of metallic 106Cd: it
contains 102.01 g of cadmium (97.23% of the initial value).
First meaurements for testing scintillation properties. 8,1% energy resolution
obtained at 662 keV: excellent energy resolution for CdWO4 especially
taking into account the elongated shape of the crystal.