Search results for "beta-delayed neutron emitters"

showing 2 items of 2 documents

r Process (n, γ) Rate Constraints from the γ Emission of Neutron Unbound States in β decay

2017

Total absorption gamma-ray spectroscopy is used to measure accurately the intensity of γγ emission from neutron-unbound states populated in the ββ-decay of delayed-neutron emitters. From the comparison of this intensity with the intensity of neutron emission a constraint on the (n, γγ) cross section for highly unstable neutron-rich nuclei can be deduced. A surprisingly large γγ branching was observed for a number of isotopes which might indicate the need to increase by a large factor the Hauser-Feshbach (n, γγ) cross-section estimates that impact on r process abundance calculations. peerReviewed

total absorption gamma-ray spectroscopybeta-delayed neutron emittersAstrophysics::High Energy Astrophysical Phenomenar-processutron-capture ratesNuclear Experiment
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First experiment with the NUSTAR/FAIR Decay Total Absorption γ-Ray Spectrometer (DTAS) at the IGISOL IV facility

2015

V. Guadilla et al. ; 4 págs.; 4 figs.; 1 tab.

SOL facilitiesNuclear and High Energy PhysicsAnalytical chemistryβ decay[PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex]Total Absorption γ-Ray Spectrometertotal absorption gamma-ray spectrometer01 natural sciencesNuclear physicsLow energy0103 physical sciences010306 general physicsAbsorption (electromagnetic radiation)Instrumentationbeta-delayed neutron emittersSpectrometerta114010308 nuclear & particles physicsChemistryDetector3. Good healthexotic nucleiβ-Delayed neutron emittersISOL facilitiesbeta decayExotic nuclei
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