Two-neutrino double-[beta] decay measurement of [sup 100]Mo

Journal Article · Wed Mar 01 00:00:00 EST 1995 · Physical Review, D (Particles Fields); (United States)

DOI:https://doi.org/10.1103/PhysRevD.51.2090· OSTI ID:6852308

Dassie, D; Eschbach, R; Hubert, F; Hubert, P; Isaac, M C; Izac, C; Leccia, F; Mennrath, P; Vareille, A ^[1]; Longuemare, C; Mauger, F ^[2]; Danevich, F; Kouts, V; Tretyak, V I; Vassilyev, Y; Zdesenko, Y ^[3]; Barabash, A S; Kornoukov, V N; Lepikhin, Y B; Umatov, V I ; Vanushin, I A ^[4]; Augier, C; Blum, D; Campagne, J E; Jullian, S; Lalanne, D; Laplanche, F; Natchez, F; Pichenot, G; Szklarz, G ^[5]; Arnold, R; Guyonnet, J L; Lamhamdi, T; Linck, I; Piquemal, F; Scheibling, F ^[6]

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1. Centre d'Etudes Nucleaires, IN2P3-CNRS et Universite de Bordeaux, 33170 Gradignan (France)
2. Laboratoire de Physique Corpusculaire, IN2P3-CNRS et Universite de Caen, 14032 Caen (France)
3. Institute for Nuclear Research of the Ukrainian Academy of Sciences, Kiev (Ukraine)
4. Institute for Theoretical and Engineering Physics, Moscow (Russian Federation)
5. Laboratoire de l'Accelerateur Lineaire, IN2P3-CNRS et Universite de Paris-Sud, 91405 Orsay (France)
6. Centre de Recherches Nucleaires, IN2P3-CNRS et

From data accumulated over 6140 h with 172 g of enriched molybdenum (1.18 mol yr of [sup 100]Mo) with the NEMO 2 detector in the Frejus Underground Laboratory, a clear [beta][beta]2[nu] signal (1433 events) is observed, leading to a half-life [ital T][sub 1/2]=0.95[plus minus]0.04(stat)[plus minus]0.09(syst) 10[sup 19] yr. The experimental two-electron energy spectrum and the two-electron angular distribution are in agreement with the expected ones. Limits for [beta][beta]0[nu] decays to the ground state, excited states (2[sub 1][sup +] and 0[sub 1][sup +]), and also with Majoron emission are given.

• OSTI ID: 6852308
• Journal Information: Physical Review, D (Particles Fields); (United States), Vol. 51:5; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
MOLYBDENUM 100
DOUBLE BETA DECAY
ANGULAR DISTRIBUTION
ELECTRONS
EMISSION
ENERGY SPECTRA
EXCITED STATES
GROUND STATES
HALF-LIFE
NEUTRINOS
BETA DECAY
BETA-MINUS DECAY
DAYS LIVING RADIOISOTOPES
DECAY
DISTRIBUTION
ELEMENTARY PARTICLES
ENERGY LEVELS
EVEN-EVEN NUCLEI
FERMIONS
INTERMEDIATE MASS NUCLEI
ISOTOPES
LEPTONS
MASSLESS PARTICLES
MOLYBDENUM ISOTOPES
NUCLEAR DECAY
NUCLEI
RADIOISOTOPES
SPECTRA
STABLE ISOTOPES
YEARS LIVING RADIOISOTOPES
663210* - Ground-State Radioactivity- (1992-)
662430 - Properties of Leptons- (1992-)