Search results for "Neutrino Ettore Majorana Observatory"

showing 3 items of 3 documents

Measurement of the background in the NEMO 3 double beta decay experiment

2009

In the double beta decay experiment NEMO 3 a precise knowledge of the background in the signal region is of outstanding importance. This article presents the methods used in NEMO 3 to evaluate the backgrounds resulting from most if not all possible origins. It also illustrates the power of the combined tracking-calorimetry technique used in the experiment.

Nuclear and High Energy Physicscongenital hereditary and neonatal diseases and abnormalitiesSignal regionchemistry.chemical_elementFOS: Physical sciencesRadon[PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex]01 natural sciencesNuclear physicsNEMODouble beta decay0103 physical sciencesNeutrino Ettore Majorana ObservatoryNuclear Experiment (nucl-ex)010306 general physicsskin and connective tissue diseasesLow radioactivityInstrumentationNuclear ExperimentPhysics010308 nuclear & particles physicsDetectorDouble beta decayPower (physics)BackgroundchemistryRadon
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Measurement of theββDecay Half-Life ofTe130with the NEMO-3 Detector

2011

This Letter reports results from the NEMO-3 experiment based on an exposure of 1275 days with 661g of 130Te in the form of enriched and natural tellurium foils. With this data set the double beta decay rate of 130Te is found to be non-zero with a significance of 7.7 standard deviations and the half-life is measured to be T1/2 = (7.0 +/- 0.9(stat) +/- 1.1(syst)) x 10^{20} yr. This represents the most precise measurement of this half-life yet published and the first real-time observation of this decay.

PhysicsIsotope010308 nuclear & particles physicsStable isotope ratioGeneral Physics and AstronomyHalf-lifechemistry.chemical_element01 natural sciencesBeta decayNuclear physicschemistryDouble beta decay0103 physical sciencesNeutrino Ettore Majorana Observatory010306 general physicsTelluriumRadioactive decayPhysical Review Letters
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Theoretical study of neutrino scattering off the stable even Mo isotopes at low and intermediate energies

2011

A systematic study of the cross sections of neutral-current neutrino scattering off the stable even Mo isotopes (mass number A = 92, 94, 96, 98, 100), at low and intermediate neutrino energies (E(nu) <= 130 MeV), is presented and discussed. The required wave functions for the initial (ground state) and all accessible final nuclear states are constructed in the context of the quasi-particle random-phase approximation (QRPA) and tested against data on the low-lying energy spectra of the isotopes in question. The individual contributions coming from the polar-vector and axial-vector components of the hadronic current for the coherent and incoherent channels of each isotope are investigated. Th…

inelastic cross sectionsNuclear and High Energy PhysicsParticle physicsHadronsemi-leptonic electro-weak interactionsneutrino-nucleus reactionsnuclear-data sheetsNuclear physicsdedicated supernova detectionDouble beta decayelastic-scatteringNeutrino Ettore Majorana ObservatoryconversionNuclear ExperimentdetectorsPhysicsMass numberweak-interactionNeutral currentIsotopequasi-particle random-phase approximationspallationSupernovareaction cross-sectionsnetworkHigh Energy Physics::ExperimentNeutrinoburstNuclear Physics A
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