Search results for "superheavy nuclei"

showing 3 items of 3 documents

Relativistic Energy Density Functional Description of Shape Transition in Superheavy Nuclei

2012

Relativistic energy density functionals (REDF) provide a complete and accurate, global description of nuclear structure phenomena. A modern semi-empirical functional, adjusted to the nuclear matter equation of state and to empirical masses of deformed nuclei, is applied to studies of shapes of superheavy nuclei. The theoretical framework is tested in a comparison of calculated masses, quadrupole deformations, and potential energy barriers to available data on actinide isotopes. Self-consistent mean-field calculations predict a variety of spherical, axial and triaxial shapes of long-lived superheavy nuclei, and their alpha-decay energies and half-lives are compared to data. A microscopic, RE…

Nuclear and High Energy PhysicsNuclear TheoryNuclear TheoryFOS: Physical sciences01 natural sciencesNuclear physicssuperheavy nucleiNuclear Theory (nucl-th)0103 physical sciencesalpha-decayNuclear Energy Density Functional; Superheavy Nuclei; alpha-decay010306 general physicsNuclear ExperimentPhysicsIsotopeta114010308 nuclear & particles physicsEquation of state (cosmology)Relativistic energyNuclear structurenuclear energy density functionalActinideNuclear matterPotential energyNATURAL SCIENCES. Physics.3. Good healthPRIRODNE ZNANOSTI. Fizika.QuadrupoleAtomic physics
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Properties of nuclei in the nobelium region studied within the covariant, Skyrme, and Gogny energy density functionals

2015

We calculate properties of the ground and excited states of nuclei in the nobelium region for proton and neutron numbers of 92 <= Z <= 104 and 144 <= N <= 156, respectively. We use three different energy-density-functional (EDF) approaches, based on covariant, Skyrme, and Gogny functionals, each within two different parameter sets. A comparative analysis of the results obtained for odd-even mass staggerings, quasiparticle spectra, and moments of inertia allows us to identify single-particle and shell effects that are characteristic to these different models and to illustrate possible systematic uncertainties related to using the EDF modelling

Nuclear and High Energy Physics[PHYS.NUCL]Physics [physics]/Nuclear Theory [nucl-th]ProtonNuclear TheoryNuclear Theorychemistry.chemical_elementFOS: Physical sciences7. Clean energySpectral lineMoments of inertiaNuclear physicsNuclear Theory (nucl-th)NeutronCovariant transformationHeavy and superheavy nucleiPhysicsta114Odd–even mass staggeringMoment of inertiachemistryExcited stateQuasiparticleNobeliumQuasiparticle excitationsNuclear energy density functionalsNuclear masses
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Ca-48+Bk-249 Fusion Reaction Leading to Element Z=117: Long-Lived alpha-Decaying (270)Db and Discovery of Lr-266

2014

The superheavy element with atomic number Z=117 was produced as an evaporation residue in the 48Ca+249Bk fusion reaction at the gas-filled recoil separator TASCA at GSI Darmstadt, Germany. The radioactive decay of evaporation residues and their α-decay products was studied using a detection setup that allowed measuring decays of single atomic nuclei with half-lives between sub-μs and a few days. Two decay chains comprising seven α decays and a spontaneous fission each were identified and are assigned to the isotope 294117 and its decay products. A hitherto unknown α-decay branch in 270Db (Z=105) was observed, which populated the new isotope 266Lr (Z=103). The identification of the long-live…

superheavy nucleiseparatorgsitascaca-48-inducted reactionsheaviest elements
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