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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

Abstract : Large lithium molybdate (Li2MoO4) 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 X-ray-induced and thermally-excited luminescence. A large cylindrical crystalline element (with a size of circle divide 40 x 40 mm) was used to fabricate a scintillating bolometer, which was operated aboveground at similar to 15 mK by using a pulse-tube cryostat housing a high-power dilution refrigerator. The excellent detector performance in terms of energy resolution and alpha background suppression along with preliminary positive indications on the radiopurity of this material show the potentiality of Li2MoO4 scintillating bolometers for low-counting experiment to search for neutrinoless double beta decay of Mo-100. (C) 2015 Elsevier B.V. All rights reserved.
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Submitted on : Friday, October 23, 2015 - 11:02:02 AM
Last modification on : Thursday, October 22, 2020 - 1:45:09 PM

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T B. Bekker, N. Coron, F A. Danevich, V Ya. Degoda, A. Giuliani, et al.. Aboveground test of an advanced Li$_2$MoO$_4$ scintillating bolometer to search for neutrinoless double beta decay of $^{100}$Mo. Astroparticle Physics, Elsevier, 2016, 72, pp.38-45. ⟨10.1016/j.astropartphys.2015.06.002⟩. ⟨in2p3-01219762⟩

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