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Aboveground test of an advanced Li2MoO4 scintillating bolometer to search for neutrinoless double beta decay of 100Mo

T.B. Bekker N. Coron F.A. Danevich V.Ya. Degoda A. Giuliani 1 V.D. Grigorieva N.V. Ivannikova M. Mancuso 1 P. de Marcillac 1 I.M. Moroz C. Nones 2 E. Olivieri 3 G. Pessina D.V. Poda 1 V.N. Shlegel V.I. Tretyak M. Velazquez
1 CSNSM PS1
CSNSM - Centre de Spectrométrie Nucléaire et de Spectrométrie de Masse, CSNSM - Centre de Sciences Nucléaires et de Sciences de la Matière
3 CSNSM INSTRU
CSNSM - Centre de Sciences Nucléaires et de Sciences de la Matière
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 ⊘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 high-power 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 Li2MoO4 scintillating bolometers for low-counting experiment to search for neutrinoless double beta decay of 100Mo.
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Submitted on : Friday, June 26, 2015 - 4:29:15 PM
Last modification on : Wednesday, September 16, 2020 - 5:45:25 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 Li2MoO4 scintillating bolometer to search for neutrinoless double beta decay of 100Mo. Astroparticle Physics, Elsevier, 2015, in press. ⟨10.1016/j.astropartphys.2015.06.002⟩. ⟨in2p3-01168890⟩

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