Abstract
The advanced Mo-based rare process experiment (AMoRE) is an international project searching for the neutrinoless double beta (\(0\nu \beta \beta \)) decay of \(^{100}\)Mo using low-temperature calorimetric detection of heat and light signals based on magnetic microcalorimeter (MMC) readouts. \(\hbox {Li}_2\hbox {MoO}_4\) crystals have been considered as the main target crystals for the second phase of the AMoRE project, which aims to use 100 kg of \(^{100}\)Mo. However, the hygroscopicity of \(\hbox {Li}_2\hbox {MoO}_4\) requires moistureless processes during surface treatment, storage, detector assembly, and installation. \(\hbox {PbMoO}_4\) crystals are nonhygroscopic and exhibit high scintillation efficiency, often leading to high particle discrimination power in the phonon channel via pulse-shape analysis and light/heat ratio variation. A low-temperature detector setup with a 1 \(\hbox {cm}^3\) cubic crystal of \(\hbox {PbMoO}_4\) was prepared for simultaneous heat and light detection based on MMC readouts. After study of internal background control using archeological Pb, \(\hbox {PbMoO}_4\) crystal can be a promising candidate crystal. We present a feasibility study of \(\hbox {PbMoO}_4\) crystals for a \(0\nu \beta \beta \) experiment.
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07 October 2022
A Correction to this paper has been published: https://doi.org/10.1007/s10909-022-02869-8
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Acknowledgements
This research is supported by the Institute for Basic Science (IBS) under project codes IBS-R016-D1 and IBS-R016-A2, and the Ministry of Science and Higher Education of the Russian Federation N121031700314-5.
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Kim, H.L., So, J.H., Kim, Y.H. et al. A Study on \(\hbox {PbMoO}_4\) Phonon-Scintillation Detection with MMC Readouts for a Neutrinoless Double Beta Decay Search. J Low Temp Phys 209, 409–416 (2022). https://doi.org/10.1007/s10909-022-02824-7
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DOI: https://doi.org/10.1007/s10909-022-02824-7