0000000000162412

AUTHOR

C. H. Nguyen

showing 3 related works from this author

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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Spectral modeling of scintillator for the NEMO-3 and SuperNEMO detectors

2010

We have constructed a GEANT4-based detailed software model of photon transport in plastic scintillator blocks and have used it to study the NEMO-3 and SuperNEMO calorimeters employed in experiments designed to search for neutrinoless double beta decay. We compare our simulations to measurements using conversion electrons from a calibration source of $\rm ^{207}Bi$ and show that the agreement is improved if wavelength-dependent properties of the calorimeter are taken into account. In this article, we briefly describe our modeling approach and results of our studies.

Nuclear and High Energy PhysicsPhotomultiplierTechnologyPhysics - Instrumentation and DetectorsPhotonPhysics::Instrumentation and DetectorsCODEFOS: Physical sciencesScintillator01 natural sciencesHigh Energy Physics - ExperimentPhysics Particles & FieldsNuclear physicsHigh Energy Physics - Experiment (hep-ex)Photomultiplier0202 Atomic Molecular Nuclear Particle And Plasma PhysicsDouble beta decay0103 physical sciences[PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex]CalibrationPlastic scintillators[PHYS.PHYS.PHYS-INS-DET]Physics [physics]/Physics [physics]/Instrumentation and Detectors [physics.ins-det]010306 general physicsNuclear Science & TechnologyInstrumentationInstruments & InstrumentationScintillationphysics.ins-detPhysicsScintillationScience & Technology010308 nuclear & particles physicshep-exPhysicsMO-100DetectorInstrumentation and Detectors (physics.ins-det)Double beta decayNuclear & Particles PhysicsCalorimeterPhysics NuclearPhysical SciencesGEANT 4DOUBLE-BETA DECAYOptical photon transport
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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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