Optical, luminescence and thermal properties of radiopure ZnMoO4 crystals used in scintillating bolometers for double beta decay search

Chernyak, D.; Danevich, F.A.; Degoda, V.Ya.; Dmitruk, І.; Ferri, F.; Галашов, Е. Н.; Giuliani, A.; Иванов, И. М.; Kobychev, V.; Mancuso, M.; Marnieros, S.; Mokina, V.M.; Nones, C.; Olivieri, E.; Pessina, G.; Rusconi, C.; Shlegel, V.N.; Stanovyi, O. P.; Tenconi, M.; Tretyak, V. I.; Tupitsyna, I.A.

doi:10.1016/j.nima.2013.07.088

Cited by 50 publications

(38 citation statements)

References 51 publications

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“…The luminescence intensity increases by a factor of 2 at 8 K in comparison with that at 85 K, and by a factor of 5 in comparison with that at room temperature. Such a behavior is rather different from the dependence observed in ZnMoO 4 [23], SrMoO 4 [38] and PbMoO 4 [39] crystal scintillators, where the intensity of luminescence drops down below the temperature range 60 − 120 K. A similar temperature behavior (increase of scintillation efficiency with cooling down to liquid helium temperature) is exhibited by MgMoO 4 [40], CaMoO 4 [41], CdMoO 4 [40], and Li 2 Zn 2 (MoO 4 ) 3 [42]. The TSL curves obtained with the Li 2 MoO 4 sample after irradiation at 8 K and at 85 K are presented in the inset of Fig.…”

Section: Luminescence Under X-ray Excitationcontrasting

confidence: 64%

“…The choice of the light detector is very important, since the light yield of Li 2 MoO 4 is expected to be remarkably lower [27] (by at least a factor 2) than that of other interesting materials to search for 0ν2β [15,[17][18][19][20][21][22][23][24][45][46][47], as pointed out in Section 1. We chose therefore a light detector with an advanced design [48] exhibiting a signal-to-noise ratio 3 -5 times higher than that achieved by the optical bolometers used so far in our tests with ZnMoO 4 detectors [49], although based on the same temperature sensor technology and read out by the same elec- tronics.…”

Section: Bolometric Tests In An Aboveground Laboratorymentioning

confidence: 99%

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Aboveground test of an advanced Li 2 MoO 4 scintillating bolometer to search for neutrinoless double beta decay of 100 Mo

Bekker

Coron

Danevich

et al. 2016

Astroparticle Physics

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109

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Large lithium molybdate (Li 2 MoO 4 ) crystal boules were produced by using the low thermal gradient Czochralski growth technique from deeply purified molybdenum. A small sample from one of the boules was preliminary characterized in terms of Xray-induced and thermally-excited luminescence. A large cylindrical crystalline element (with a size of ⊘40 × 40 mm) was used to fabricate a scintillating bolometer, which was operated aboveground at ∼ 15 mK by using a pulse-tube cryostat housing a highpower dilution refrigerator. The excellent detector performance in terms of energy resolution and α background suppression along with preliminary positive indications on the radiopurity of this material show the potentiality of Li 2 MoO 4 scintillating bolometers for low-counting experiment to search for neutrinoless double beta decay of 100 Mo.

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Section: Luminescence Under X-ray Excitationcontrasting

confidence: 64%

Section: Bolometric Tests In An Aboveground Laboratorymentioning

confidence: 99%

Aboveground test of an advanced Li 2 MoO 4 scintillating bolometer to search for neutrinoless double beta decay of 100 Mo

Bekker

Coron

Danevich

et al. 2016

Astroparticle Physics

Self Cite

109

View full text Add to dashboard Cite

show abstract

“…It is worthwhile noting that the decrease of scintillation light yield with temperature has been observed in some other molybdates. Such feature can be explained by capture of excited free carriers by shallow traps [14], [29], [28], [30]. This notion is corroborated by …”

Section: Resultsmentioning

confidence: 59%

Temperature dependence of scintillation properties of SrMoO4

Mikhailik

Elyashevskyi

Kraus

et al. 2015

Nuclear Instruments and Methods in Physics Research Section A:

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Studies of the X-ray luminescence and scintillation properties of a SrMoO 4 crystal as function of temperature down to T=10 K have been carried out. The luminescence in SrMoO 4 is quenched at room temperature, but below T<200 K the crystal exhibits a broad emission band with a maximum at a wavelength of 520 nm. The emission is attributed to the radiative decay of self-trapped excitons and defects acting as traps for the exactions at low temperatures. Such complex character of radiative decay is reflected in the kinetics which contains several components plus a contribution from delayed recombination at low temperatures. The temperature dependence of scintillation light output of SrMoO 4 was studied. Comparing with a reference ZnWO 4 crystal measured under the same experimental conditions it was found that the light output of SrMoO 4 is 15±5%. It is suggested, therefore, that there is scope for optimisation of strontium molybdate for application as scintillator in cryogenic rare event searches.

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“…The LUMINEU program requires a deep purification of molybdenum both from radioactive elements and from impurities, which color the ZnMoO 4 crystals [14]. A purification using two- stage sublimation of molybdenum oxide in vacuum and recrystallization from aqueous solutions of ammonium para-molybdate was developed.…”

Section: Development Of Znmoo 4 Cryogenic Scintillating Bolometersmentioning

confidence: 99%

LUMINEU: a search for neutrinoless double beta decay based on ZnMoO₄scintillating bolometers

Armengaud

Arnaud

Augier

et al. 2016

J. Phys.: Conf. Ser.

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Optical, luminescence and thermal properties of radiopure ZnMoO4 crystals used in scintillating bolometers for double beta decay search

Cited by 50 publications

References 51 publications

Aboveground test of an advanced Li 2 MoO 4 scintillating bolometer to search for neutrinoless double beta decay of 100 Mo

Aboveground test of an advanced Li 2 MoO 4 scintillating bolometer to search for neutrinoless double beta decay of 100 Mo

Temperature dependence of scintillation properties of SrMoO4

LUMINEU: a search for neutrinoless double beta decay based on ZnMoO₄scintillating bolometers

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Optical, luminescence and thermal properties of radiopure ZnMoO4 crystals used in scintillating bolometers for double beta decay search

Cited by 50 publications

References 51 publications

Aboveground test of an advanced Li 2 MoO 4 scintillating bolometer to search for neutrinoless double beta decay of 100 Mo

Aboveground test of an advanced Li 2 MoO 4 scintillating bolometer to search for neutrinoless double beta decay of 100 Mo

Temperature dependence of scintillation properties of SrMoO4

LUMINEU: a search for neutrinoless double beta decay based on ZnMoO4scintillating bolometers

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LUMINEU: a search for neutrinoless double beta decay based on ZnMoO₄scintillating bolometers