0000000000594264

AUTHOR

A. Steer

showing 6 related works from this author

γ-Ray Spectroscopy at the Limits: First Observation of Rotational Bands inLr255

2009

The rotational band structure of Lr-255 has been investigated using advanced in-beam gamma-ray spectroscopic techniques. To date, Lr-255 is the heaviest nucleus to be studied in this manner. One ro ...

Physics010308 nuclear & particles physicsAstrophysics::High Energy Astrophysical PhenomenaNuclear TheoryGeneral Physics and AstronomyMoment of inertia01 natural sciencesNuclear physicsmedicine.anatomical_structureMean field theory0103 physical sciencesmedicineGamma spectroscopyAlpha decayAtomic physicsNuclear Experiment010306 general physicsElectronic band structureNucleusPhysical Review Letters
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Decay of the high-spin isomer in 160Re: Changing single-particle structure beyond the proton drip line

2011

WOS: 000286708700015

Nuclear reactionPhysicsNuclear and High Energy PhysicsProtonta114Gas-filled recoil separator Si and Ge strip detectorsNUCLEAR REACTIONS Ni-58+Cd-106 at 290300 MeV beam energy enriched targetsMeasured E gamma t1/2ParticleNeutronNuclear reactionsAtomic physicsProton emissionGround stateMeasuredLine (formation)Spin-½Physics Letters B
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Discovery of 157W and 161Os

2010

The nuclides W-157 and Os-161 have been discovered ill reactions of Ni-58 ion beams with a Cd-106 target. The Os-161 alpha-decay energy and half-life were 6890 +/- 12 keV and 640 +/- 60 mu s. The d ...

Nuclear physicsPhysicsNuclear reactionNuclear and High Energy PhysicsIsotopeBranching fractionNeutronNuclideAlpha decayAtomic physicsRadioactive decayIonPhysics Letters B
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Probing the limit of nuclear existence: Proton emission from 159Re

2006

WOS: 000240847400007

Nuclear reactionNuclear and High Energy PhysicsSi detectorsProtonNuclear Theory[PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex]measured E (p) (t)1 / 201 natural sciences7. Clean energyNuclear physicsEp0103 physical sciencesEnriched targetsNeutronNuclideProton emissionNuclear Experiment010306 general physics106Cd at 300 MeV beam energyPhysicsIsotope010308 nuclear & particles physics21.10.Hw; 21.10.Tg; 23.50.+z; 27.70.+q58Nit1/2NUCLEAR REACTIONS Ni-58+Cd-106 at 300 MeV beam energy13. Climate actionNuclear reactionsGas-filled recoil separatorAtomic physicsNucleonMeasuredRadioactive decayPhysics Letters B
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Precision measurements of proton emission from the ground states ofTa156andRe160

2011

The decays of the $\ensuremath{\pi}{d}_{3/2}$ ground states of $^{156}\mathrm{Ta}$ and $^{160}\mathrm{Re}$ have been studied in detail using the GREAT spectrometer. More than 7000 $^{160}\mathrm{Re}$ nuclei were produced in reactions of 290- and 300-MeV $^{58}\mathrm{Ni}$ ions with an isotopically enriched $^{106}\mathrm{Cd}$ target and separated in flight using the RITU separator. The proton and $\ensuremath{\alpha}$ decays of the $\ensuremath{\pi}{d}_{3/2}$ level were confirmed and the half-life and branching ratios of this state were determined with improved precision to be ${t}_{1/2}=611\ifmmode\pm\else\textpm\fi{}7$ $\ensuremath{\mu}$s and ${b}_{\mathrm{p}}=89\ifmmode\pm\else\textpm\fi…

PhysicsNuclear and High Energy PhysicsProtonBranching fractionHadronElementary particleAlpha decayAtomic physicsNucleonGround stateDimensionless quantityPhysical Review C
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Nuclear isomers in superheavy elements as stepping stones towards the island of stability

2006

The stability of an atomic nucleus is determined by the outcome of a tug-of-war between the attractive strong nuclear force and the repulsive electrostatic force between the protons in the nucleus. If 100 protons and about 150 neutrons or more are assembled into a nucleus, the repulsion usually becomes dominant and causes the nucleus to fission. For certain 'magic numbers' of protons and neutrons this repulsion can be overcome and the nucleus stabilized. In particular an 'island of stability' is predicted beyond the actinides, where long-lived or even stable superheavy elements can exist, but its precise limits are unknown. Experiments can help determine where this island lies, however. Spe…

Multidisciplinary010308 nuclear & particles physicsChemistryFermiumNuclear TheoryStrong interactionchemistry.chemical_element01 natural sciences7. Clean energyIsland of stabilityNuclear physics0103 physical sciencesAtomic nucleusNuclear fusionNeutronNobeliumAtomic numberAtomic physicsNuclear Experiment010306 general physicsNature
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