0000000000279749

AUTHOR

J. M. Allmond

showing 3 related works from this author

First candidates for γ vibrational bands built on the [505]11/2⁻ neutron orbital in odd-A Dy isotopes

2020

Rotational structures have been measured using the Jurogam II and GAMMASPHERE arrays at low spin following the 155Gd(α,2n)157Dy and 148Nd(12C,5n)155Dy reactions at 25 and 65 MeV, respectively. We report high-K bands, which are conjectured to be the first candidates of a Kπ=2+γ vibrational band, built on the [505]11/2− neutron orbital, in both odd-A155,157Dy isotopes. The coupling of the first excited K=0+ states or the so-called β vibrational bands at 661 and 676 keV in 154Dy and 156Dy to the [505]11/2− orbital, to produce a Kπ=11/2− band, was not observed in both 155Dy and 157Dy, respectively. The implication of these findings on the interpretation of the first excited 0+ states in the cor…

nuclear spin and parityshell modelcollective levelshiukkasfysiikkaydinfysiikkanuclear structure and decaysnuclear fusionnuclear reactions
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The BRIKEN Project: Extensive Measurements of $\beta $-delayed Neutron Emitters for the Astrophysical r Process

2018

An ambitious program to measure decay properties, primarily β-delayed neutron emission probabilities and half-lives, for a significant number of nuclei near or on the path of the rapid neutron capture process, has been launched at the RIKEN Nishina Center. We give here an overview of the status of the project.

AstrofísicaDelayed neutronNeutron emissionAstrophysics::High Energy Astrophysical PhenomenaNuclear dataNuclear TheoryMeasure (physics)General Physics and AstronomyNeutronAstrophysics01 natural sciencesNuclear physics0103 physical sciencesNeutronNuclear Experiment010306 general physics:Energies::Energia nuclear [Àrees temàtiques de la UPC]NeutronsPhysics:Física [Àrees temàtiques de la UPC]010308 nuclear & particles physicsNuclear dataNeutron capture:Física::Astronomia i astrofísica [Àrees temàtiques de la UPC]r-processDelayed neutronActa Physica Polonica B
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β-delayed neutron emission of r-process nuclei at the N = 82 shell closure

2021

This experiment was performed at RI Beam Factory operated by RIKEN Nishina Center and CNS, University of Tokyo. O.H, T.D, P.J.W, C.G.B, C.J.G and D.K would like to thank STFC, UK for support. This research was sponsored in part by the Office of Nuclear Physics, U.S. Department of Energy under Award No. DE-FG02-96ER40983 (UTK) and DEAC05-00OR22725 (ORNL), and by the National Nuclear Security Administration under the Stewardship Science Academic Alliances program through DOE Award No. DENA0002132. This work was supported by National Science Foundation under Grants No. PHY-1430152 (JINA Center for the Evolution of the Elements), No. PHY-1565546 (NSCL), and No. PHY-1714153 (Central Michigan Uni…

Nuclear and High Energy PhysicsNational securityQC1-999ß-delayedNuclear physicsLibrary scienceNeutrons--Capturaβ-delayed neutron emission7. Clean energy01 natural sciencesNeutrons--CaptureAstrophysical0103 physical sciencesEuropean commissionr-processimportant010306 general physicsChinaNuclear ExperimentNeutron emissionr-processPhysics:Física [Àrees temàtiques de la UPC]010308 nuclear & particles physicsbusiness.industryr-processPhysicsChinese academy of sciencesbeta-delayed neutron emissionResearch councilChristian ministryFísica nuclearNational laboratorybusinessAdministration (government)Physics Letters B
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