Growth of ${\rm ZnWO}_{4}$ Crystal Scintillators for High Sensitivity $2\beta$ Experiments

Nagornaya, L.L.; Dubovik, A.M.; Vostretsov, Yu.Ya.; Grinyov, B.; Danevich, F.A.; Katrunov, K.; Mokina, V.M.; Onishchenko, G.M.; Poda, D.V.; Starzhinskiy, N.; Tupitsyna, I.A.

doi:10.1109/tns.2007.910974

Cited by 31 publications

(31 citation statements)

References 19 publications

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“…Large volume ZnWO 4 single crystals of reasonable quality were grown [12] and studied as scintillators in the eighties [13]. Further developments for high quality radiopure ZnWO 4 have been performed and described in [10,14,15].…”

Section: The Main Features Of the Znwo 4 Anisotropic Scintillatormentioning

confidence: 99%

“…More recently, radiopurity and double beta decay processes of zinc and tungsten have been further studied also at LNGS using new developed ZnWO 4 detectors with masses 0.1 − 0.7 kg [8,9,18,19]. The growth of the crystals, the scintillation properties, the pulse shape discrimination capability, the anisotropic properties, the residual radioactive contamination and the possible applications have been deeply studied [8,10,14,15,[17][18][19][20]. The obtained results are very promising and an R&D to produce ZnWO 4 crystals having higher radiopurity is still ongoing.…”

Section: The Main Features Of the Znwo 4 Anisotropic Scintillatormentioning

confidence: 99%

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ZnWO₄anisotropic scintillator for Dark Matter investigation with the directionality technique

et al. 2017

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Abstract. The ZnWO 4 crystal scintillator has unique features that make it very promising to realize a pioneering experiment to pursue Dark Matter investigation with the directionality technique. In particular in this detector the light output and the scintillation pulse shape for heavy particles (p, α, nuclear recoils) depend on the direction of the impinging particle with respect to the crystal axes, while the response to γ/β radiation is isotropic. The anisotropy of the light output can be considered to point out the presence in the diurnal counting rate of a Dark Matter signal produced by candidate particle inducing just nuclear recoils. In addition this crystal detector has also other important characteristics for a Dark Matter experiment: high light output, high level of radiopurity. In this paper the present performances of the developed ZnWO 4 crystal scintillator will be summarized together with the possible future improvements. Some reachable sensitivities -under given assumptions -in the investigation of DM candidate particles with the directionality technique will also be addressed.

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Section: The Main Features Of the Znwo 4 Anisotropic Scintillatormentioning

confidence: 99%

Section: The Main Features Of the Znwo 4 Anisotropic Scintillatormentioning

confidence: 99%

ZnWO₄anisotropic scintillator for Dark Matter investigation with the directionality technique

et al. 2017

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“…All crystals used for measurements are listed in Table I. The samples ZWO-1 and ZWO-2 were produced from monocrystal grown by the Czochralski method [3]. The crystal ZWO-3 was grown by the low-thermal gradient Czochralski technique [10].…”

Section: Experimental -Detector and Low-background Measurementsmentioning

confidence: 99%

“…in order to study its radioactive contamination, and to search for double beta decay of zinc and tungsten isotopes [2]. Recently, radiopurity of large volume ZnWO 4 scintillator (mass of 119 g) has also been tested in the SUL [3]; other detectors (with masses of 0.1-0.7 kg) have been measured at Laboratori Nazionali del Gran Sasso (LNGS) [4,5]. Possibilities to apply ZnWO 4 crystals for dark matter search were discussed in Ref.…”

Section: Introductionmentioning

confidence: 99%

Radiopurity of ZnWO₄Crystal Scintillators

et al. 2010

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Recently ZnWO4 was proposed as perspective material for low-counting experiments to search for rare processes. Such experiments demand high radiopurity of ZnWO4 crystal scintillators. With this aim radioactive contamination of large volume (0.1-0.7 kg) ZnWO4 crystal scintillators were measured in the underground Laboratori Nazionali del Gran Sasso of the INFN at the depth of ≈ 3600 m water equivalent.

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“…Until recently, there were no literature data on preparation of ZnMoO 4 single crystals of such * corresponding author; e-mail: alex.dbvk@rambler.ru size. Only in 2007 first reports appeared on preparation of large-sized high quality ZnWO 4 [6] and ZnMoO 4 crystals [7,8].…”

Section: Introductionmentioning

confidence: 99%

Research and Development of ZnBO₄(B = W, Mo) Crystal Scintillators for Dark Matter and Double Beta Decay Searching

et al. 2010

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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.

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Growth of ${\rm ZnWO}_{4}$ Crystal Scintillators for High Sensitivity $2\beta$ Experiments

Cited by 31 publications

References 19 publications

ZnWO₄anisotropic scintillator for Dark Matter investigation with the directionality technique

ZnWO₄anisotropic scintillator for Dark Matter investigation with the directionality technique

Radiopurity of ZnWO₄Crystal Scintillators

Research and Development of ZnBO₄(B = W, Mo) Crystal Scintillators for Dark Matter and Double Beta Decay Searching

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Growth of ${\rm ZnWO}_{4}$ Crystal Scintillators for High Sensitivity $2\beta$ Experiments

Cited by 31 publications

References 19 publications

ZnWO4anisotropic scintillator for Dark Matter investigation with the directionality technique

ZnWO4anisotropic scintillator for Dark Matter investigation with the directionality technique

Radiopurity of ZnWO4Crystal Scintillators

Research and Development of ZnBO4(B = W, Mo) Crystal Scintillators for Dark Matter and Double Beta Decay Searching

Contact Info

Product

Resources

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ZnWO₄anisotropic scintillator for Dark Matter investigation with the directionality technique

ZnWO₄anisotropic scintillator for Dark Matter investigation with the directionality technique

Radiopurity of ZnWO₄Crystal Scintillators

Research and Development of ZnBO₄(B = W, Mo) Crystal Scintillators for Dark Matter and Double Beta Decay Searching