Development of radiopure cadmium tungstate crystal scintillators from enriched 106Cd and 116Cd to search for double beta decay.

Authors :: Danevich, F. A.
Barabash, A. S.
Belli, P.
Bernabei, R.
Boiko, R. S.
Brudanin, V. B.
Cappella, F.
Caracciolo, V.
Cerulli, R.
Chernyak, D. M.
d'Angelo, S.
Degoda, V. Ya.
di Vacri, M. L.
Dossovitskiy, A. E.
Galashov, E. N.
Incicchitti, A.
Kobychev, V. V.
Konovalov, S. I.
Kovtun, G. P.
Kropivyansky, B. N.
Source :: AIP Conference Proceedings; Aug2013, Vol. 1549 Issue 1, p201-204, 4p, 1 Chart, 2 Graphs
Publication Year :: 2013
Abstract: Cadmium tungstate crystal scintillators enriched in <superscript>106</superscript>Cd up to 66% (<superscript>106</superscript>CdWO<subscript>4</subscript>) and in <superscript>116</superscript>Cd up to 82% (<superscript>116</superscript>CdWO<subscript>4</subscript>) have been developed. The low radioactive contamination of the crystals measured on the level of ≤ 1.5 mBq/kg (<superscript>40</superscript>K), ≤ 0.005 - 0.012 mBq/kg (<superscript>226</superscript>Ra), 0.04 - 0.07 mBq/kg (<superscript>228</superscript>Th) allows to carry out high sensitivity experiments to search for double beta processes in <superscript>106</superscript>Cd and <superscript>116</superscript>Cd. [ABSTRACT FROM AUTHOR]

Subjects :: SCINTILLATORS
CADMIUM tungstate crystals
RADIOACTIVE contamination
DOUBLE beta decay
EXPERIMENTAL design

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