Author/Authors :
Lee، نويسنده , , S.J. and Choi، نويسنده , , J.H. and Danevich، نويسنده , , F.A. and Jang، نويسنده , , Y.S. and Kang، نويسنده , , W.G. and Khanbekov، نويسنده , , N. and Kim، نويسنده , , H.J. and Kim، نويسنده , , I.H. and Kim، نويسنده , , S.C and Kim، نويسنده , , S.K and Kim، نويسنده , , Y.D. and Kim، نويسنده , , Y.H. and Kobychev، نويسنده , , V.V. and Kornoukhov، نويسنده , , V.N. and Lee، نويسنده , , J.I. and Lee، نويسنده , , J.S. and Lee، نويسنده , , K.B. and Lee، نويسنده , , M.K. Edwin Lee، نويسنده , , Y.H. and Myung، نويسنده , , S.S. and So، نويسنده , , J.H. and Tretyak، نويسنده , , V.I. and Yuryev، نويسنده , , Y.، نويسنده ,
Abstract :
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.
