R&D of cadmium tungstate (CdWO 4 ) crystal scintillators with cadmium enriched in 106 Cd is in progress with aim to realize an experiment to search for double beta processes in 106 Cd. Samples of cadmium (with natural isotopic composition and enriched in 106 Cd) were purified by vacuum distillation. Cadmium tungstate compounds (natural and enriched) to grow CdWO 4 crystals were synthesized from solutions. Contamination of the cadmium samples and synthesized compounds were measured by mass spectrometry. Concentration of iron was determined by atomic absorption spectroscopy. CdWO 4 crystal boule was grown by Czochralsky method from the natural cadmium tungstate compound. The total losses of cadmium on the stages of purification, raw material synthesis, crystal growth and scintillator production do not exceed 4 %. An excellent energy resolution FWHM = 8.1 % was measured by ∅22 × 29 mm CdWO 4 scintillator for 662 keV γ quanta of 137 Cs source.
Belli, P., Bernabei, R., Boiko, R.s., Brudanin, V.b., R., C., Danevich, F.a., et al. (2008). developmwnts of enriched cadmium tungstate crystal scintillators to search for double beta decay processes of 106Cd. In Proceedings of the 2nd International Conference Current Problems in Nuclear Physics and Atomic Energy, June 9 - 15, 2008, Kyiv, UKRAINE (pp. 477-481). Kiyv : INR-Kiyv.
developmwnts of enriched cadmium tungstate crystal scintillators to search for double beta decay processes of 106Cd
BERNABEI R;d'Angelo S;
2008-01-01
Abstract
R&D of cadmium tungstate (CdWO 4 ) crystal scintillators with cadmium enriched in 106 Cd is in progress with aim to realize an experiment to search for double beta processes in 106 Cd. Samples of cadmium (with natural isotopic composition and enriched in 106 Cd) were purified by vacuum distillation. Cadmium tungstate compounds (natural and enriched) to grow CdWO 4 crystals were synthesized from solutions. Contamination of the cadmium samples and synthesized compounds were measured by mass spectrometry. Concentration of iron was determined by atomic absorption spectroscopy. CdWO 4 crystal boule was grown by Czochralsky method from the natural cadmium tungstate compound. The total losses of cadmium on the stages of purification, raw material synthesis, crystal growth and scintillator production do not exceed 4 %. An excellent energy resolution FWHM = 8.1 % was measured by ∅22 × 29 mm CdWO 4 scintillator for 662 keV γ quanta of 137 Cs source.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
