Search results for "Delayed neutrons"

showing 2 items of 2 documents

Beta Decay Studies of Neutron Rich Nuclei Using Total Absorption Gamma-ray Spectroscopy and Delayed Neutron Measurements

2010

International audience; A complete characterisation of the β-decay of neutron-rich nuclei can be obtained from the measurement of β-delayed gamma rays and, whenever the process is energetically possible, β-delayed neutrons. The accurate determination of the β-intensity distribution and the β-delayed neutron emission probability is of great relevance in the fields of reactor technology and nuclear astrophysics. A programme for combined measurements using the total absorption gamma-ray spectroscopy technique and both neutron counters and neutron time-of-flight spectrometers is presented.

Astrofísica nuclearNeutron emissionAstrophysics::High Energy Astrophysical PhenomenaNuclear TheoryGeneral Physics and AstronomyBeta decayNeutron scattering[PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex]7. Clean energy01 natural sciencesNuclear physicsPrompt neutronNuclear Technology0103 physical sciencesNuclear AstrophysicsNeutron cross sectionNeutronDelayed neutrons emission010306 general physicsNuclear ExperimentSpectroscopyPhysics:Energies::Energia nuclear [Àrees temàtiques de la UPC]Total Absorption Gamma-Rayta114010308 nuclear & particles physicsRadioactivitat betaNeutron stimulated emission computed tomographyBeta DecayDelayed Neutron Emission3. Good healthNeutron Detectors23.40.Bw 29.30.KvNuclear astrophysicsPrompt neutronsDelayed neutronNeutron activation
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Commissioning of the BRIKEN beta-delayed neutron detector for the study of exotic neutron-rich nuclei

2017

Beta-delayed neutron emission (Beta-n) is a form of radioactive decay in which an electron, an anti-neutrino and one or more neutrons are emitted. This process arises if the energy window of the decay Q_Beta is greater than the neutron separation energy S n of the daughter. The probability in each decay of emitting neutrons is called the Pn value. This form of decay plays a key role in the synthesis of chemical elements in the Universe via the rapid neutron capture process, or r-process. The r-process proceeds far from the valley of nuclear stability, and leads to very neutron-rich nuclei that then decay to the line of stability. Most of these nuclei are ßn emitters. The initial abundance d…

AstrofísicaNeutron emissionQC1-999Astrophysics::High Energy Astrophysical PhenomenaNeutron detectorNuclear TheoryElectronNeutronAstrophysics01 natural sciencesNuclear physics0103 physical sciencesNeutron detectionNeutron010306 general physicsNuclear ExperimentDelayed neutronsPhysics:Energies::Energia nuclear [Àrees temàtiques de la UPC]Neutrons:Física [Àrees temàtiques de la UPC]010308 nuclear & particles physicsPhysicsNuclear structureDetectorNeutron captureDelayed neutronRadioactive decay
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