Skip to main content
eScholarship
Open Access Publications from the University of California

Development of 100Mo -containing scintillating bolometers for a high-sensitivity neutrinoless double-beta decay search.

  • Author(s): Armengaud, E
  • Augier, C
  • Barabash, AS
  • Beeman, JW
  • Bekker, TB
  • Bellini, F
  • Benoît, A
  • Bergé, L
  • Bergmann, T
  • Billard, J
  • Boiko, RS
  • Broniatowski, A
  • Brudanin, V
  • Camus, P
  • Capelli, S
  • Cardani, L
  • Casali, N
  • Cazes, A
  • Chapellier, M
  • Charlieux, F
  • Chernyak, DM
  • de Combarieu, M
  • Coron, N
  • Danevich, FA
  • Dafinei, I
  • Jesus, M De
  • Devoyon, L
  • Domizio, S Di
  • Dumoulin, L
  • Eitel, K
  • Enss, C
  • Ferroni, F
  • Fleischmann, A
  • Foerster, N
  • Gascon, J
  • Gastaldo, L
  • Gironi, L
  • Giuliani, A
  • Grigorieva, VD
  • Gros, M
  • Hehn, L
  • Hervé, S
  • Humbert, V
  • Ivannikova, NV
  • Ivanov, IM
  • Jin, Y
  • Juillard, A
  • Kleifges, M
  • Kobychev, VV
  • Konovalov, SI
  • Koskas, F
  • Kozlov, V
  • Kraus, H
  • Kudryavtsev, VA
  • Laubenstein, M
  • Sueur, H Le
  • Loidl, M
  • Magnier, P
  • Makarov, EP
  • Mancuso, M
  • de Marcillac, P
  • Marnieros, S
  • Marrache-Kikuchi, C
  • Nagorny, S
  • Navick, X-F
  • Nikolaichuk, MO
  • Nones, C
  • Novati, V
  • Olivieri, E
  • Pagnanini, L
  • Pari, P
  • Pattavina, L
  • Pavan, M
  • Paul, B
  • Penichot, Y
  • Pessina, G
  • Piperno, G
  • Pirro, S
  • Plantevin, O
  • Poda, DV
  • Queguiner, E
  • Redon, T
  • Rodrigues, M
  • Rozov, S
  • Rusconi, C
  • Sanglard, V
  • Schäffner, K
  • Scorza, S
  • Shlegel, VN
  • Siebenborn, B
  • Strazzer, O
  • Tcherniakhovski, D
  • Tomei, C
  • Tretyak, VI
  • Umatov, VI
  • Vagneron, L
  • Vasiliev, Ya V
  • Velázquez, M
  • Vignati, M
  • Weber, M
  • Yakushev, E
  • Zolotarova, AS
  • et al.
Abstract

This paper reports on the development of a technology involving 100Mo -enriched scintillating bolometers, compatible with the goals of CUPID, a proposed next-generation bolometric experiment to search for neutrinoless double-beta decay. Large mass ( ∼1kg ), high optical quality, radiopure 100Mo -containing zinc and lithium molybdate crystals have been produced and used to develop high performance single detector modules based on 0.2-0.4 kg scintillating bolometers. In particular, the energy resolution of the lithium molybdate detectors near the Q-value of the double-beta transition of 100Mo (3034 keV) is 4-6 keV FWHM. The rejection of the α -induced dominant background above 2.6 MeV is better than 8σ . Less than 10μBq/kg activity of 232Th(228Th) and 226Ra in the crystals is ensured by boule recrystallization. The potential of 100Mo -enriched scintillating bolometers to perform high sensitivity double-beta decay searches has been demonstrated with only 10kg×d exposure: the two neutrino double-beta decay half-life of 100Mo has been measured with the up-to-date highest accuracy as T1/2 = [6.90 ± 0.15(stat.) ± 0.37(syst.)] ×1018years . Both crystallization and detector technologies favor lithium molybdate, which has been selected for the ongoing construction of the CUPID-0/Mo demonstrator, containing several kg of 100Mo .

Main Content
Current View