Growth of Crystal Scintillators for High Sensitivity 2\beta Experiments

Growth of Crystal Scintillators for High Sensitivity 2\beta Experiments

Large volume zinc tungstate crystal scintillators (up to 50 mm in diameter and 100 mm length) with improved energy resolution were developed as a result of advances in crystal growth. The energy resolution of one-centimeter cube ZnWO 4 crystals showed energy resolution in the range 8-10% for 662 keV...

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Veröffentlicht in:IEEE transactions on nuclear science 2008-06, Vol.55 (3), p.1469-1472
Hauptverfasser: Nagornaya, L.L., Dubovik, A.M., Vostretsov, Y.Ya, Grinyov, B.V., Danevich, F.A., Katrunov, K.A., Mokina, V.M., Onishchenko, G.M., Poda, D.V., Starzhinskiy, N.G., Tupitsyna, I.A.
Format: Artikel
Sprache:eng
Schlagworte:
Contamination
Crystalline materials
Crystals
Double beta decay
Energy resolution
Laboratories
Pollution measurement
Scintillation counters
scintillation detectors
Solid scintillation detectors
Tungsten
tungsten compounds
Zinc
zinc compounds
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Zusammenfassung:Large volume zinc tungstate crystal scintillators (up to 50 mm in diameter and 100 mm length) with improved energy resolution were developed as a result of advances in crystal growth. The energy resolution of one-centimeter cube ZnWO 4 crystals showed energy resolution in the range 8-10% for 662 keV gamma line of 137 Cs. A value of 13.7% has been obtained with a large sample Oslash44 times 55 mm. The radioactive contamination of a ZnWO 4 26 times 24 times 24 mm detector was tested in the Solotvina Underground Laboratory. The obtained results demonstrate ability to use ZnWO 4 in order to search for 2beta-decay of zinc and tungsten.
ISSN:0018-9499
1558-1578
DOI:10.1109/TNS.2007.910974