Physics
Scientific paper
Apr 2011
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011aph....34..732l&link_type=abstract
Astroparticle Physics, Volume 34, Issue 9, p. 732-737.
Physics
4
Scientific paper
The search for neutrinoless double beta decay (0νββ) is a key experiment for evaluating the mass of the neutrino and for determining the Majorana/Dirac nature of neutrinos. A scintillating CaMoO4 crystal is a good material for use in investigating 0νββ with cryogenic detectors. The high transition energy (Q = 3034 keV) and nearly 10% natural abundance of 100Mo, together with the scintillating property of the crystal, provide favorable conditions to search for 0νββ of 100Mo. We report a prototype experiment operating at low temperatures using a CaMoO4 crystal as a particle absorber. Prior to testing of isotopically-enriched 40Ca100MoO4 crystals, a CaMoO4 crystal with Mo of natural isotopic composition was tested. Using a metallic magnetic calorimeter as a temperature sensor, we achieved high energy resolutions for alpha particles and low-energy gamma rays. This experiment shows the feasibility of scaling up the crystal size to perform a high sensitivity search for 0νββ decay of 100Mo.
Choi Jae-Hoon
Danevich F. A.
Jang Seung Yup
Kang W. G.
Khanbekov Nikita
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