Research and Development of ZnBO_{4} (B = W, Mo) Crystal Scintillators for Dark Matter and Double Beta Decay Searching

• Authors: A. Dubovik , Yu.Ya. Vostretsov , B. Grinyov , F. Danevich , H. Kraus , L. Nagornaya , V. Mikhailik , I. Tupitsyna
• Languages of publication: EN

Abstracts

EN

Oxide crystal scintillators play a considerable role in fundamental and applied researches. However, working out of new generation of high-sensitivity equipment and new methods of research puts higher requirements. The ZnBO_{4} (B = W, Mo) crystals were grown from charge in platinum crucibles with high frequency heating, using the Czochralski method. The raw powder with optimum composition was prepared by solid phase high temperature synthesis using ZnO and BO_{3} (B = W, Mo) with 4-5N purity. Single crystals with sizes up to ∅ 50 × 100 mm were grown and scintillation elements of various sizes and shapes (cylinders, rectangular and hexahedron prisms) were produced. High spectrometric characteristics were obtained for ZnWO_{4}:R = 8-10% under excitation by ^{137}Cs (E_{γ}=662 keV), low radiation background (less than 0.2 mBq/kg) and low afterglow (0.002%, 20 ms after excitation). The obtained results demonstrate good prospects for ZnWO_{4} and ZnMoO_{4} crystal scintillators for application in low-count rate experiments, searching for double beta decay processes, interaction with dark matter particles, and also studies of rare decay processes. The material has also a good potential for application in modern tomography, scintillation bolometers and for other major researches using scintillators.

Keywords

EN

81.10.Fq; 78.70.Ps

Discipline

• 81.10.Fq: Growth from melts; zone melting and refining
• 78.70.Ps: Scintillation(see also 29.40.Mc, Scintillation detectors)

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2010
• Volume: 117
• Issue: 1
• Pages: 15-19

Dates

published

2010-01

Contributors

author

A. Dubovik

• Institute for Scintillation Materials, National Academy of Sciences of Ukraine, 60 Lenin Ave., 61001 Kharkov, Ukraine

author

Yu.Ya. Vostretsov

• Institute for Scintillation Materials, National Academy of Sciences of Ukraine, 60 Lenin Ave., 61001 Kharkov, Ukraine

author

B. Grinyov

• Institute for Scintillation Materials, National Academy of Sciences of Ukraine, 60 Lenin Ave., 61001 Kharkov, Ukraine

author

F. Danevich

• Institute for Nuclear Research, MSP, 03680 Kyiv, Ukraine

author

H. Kraus

• University of Oxford, Department of Physics, Keble Road, Oxford OX1 3RH, UK

author

L. Nagornaya

• Institute for Scintillation Materials, National Academy of Sciences of Ukraine, 60 Lenin Ave., 61001 Kharkov, Ukraine

author

V. Mikhailik

• University of Oxford, Department of Physics, Keble Road, Oxford OX1 3RH, UK

author

I. Tupitsyna

• Institute for Scintillation Materials, National Academy of Sciences of Ukraine, 60 Lenin Ave., 61001 Kharkov, Ukraine

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Identifiers

DOI

10.12693/APhysPolA.117.15