6533b85efe1ef96bd12bfd90
RESEARCH PRODUCT
Structure of superheavy nuclei along decay chains of element 115
Dirk RudolphWitold NazarewiczWitold NazarewiczWitold NazarewiczB. G. CarlssonJacek DobaczewskiJacek DobaczewskiDaniel WardYue ShiYue ShiIngemar Ragnarssonsubject
element 115PhysicsCouplingNuclear and High Energy Physicsta114IsotopeNuclear TheoryStructure (category theory)Nuclear structureNuclear physicssuperheavy elementsfission-barriersnuclear structuredensity functional calculationsPhysical SciencesSubatomic Physicsheaviest nucleiAlpha decayDecay chainElement (category theory)Nilsson-Strutinsky calculationsquasi-particle statesExcitationdescription
[Introduction] A recent high-resolution α , X -ray, and γ -ray coincidence-spectroscopy experiment offered the first glimpse of excitation schemes of isotopes along α -decay chains of Z = 115. To understand these observations and to make predictions about shell structure of superheavy nuclei below 288 115, we employ two complementary mean-field models: the self-consistent Skyrme energy density functional approach and the macroscopic-microscopic Nilsson model. We discuss the spectroscopic information carried by the new data. In particular, candidates for the experimentally observed E 1 transitions in 276 Mt are proposed. We find that the presence and nature of low-energy E 1 transitions in well-deformed nuclei around Z = 110 ,N = 168 strongly depends on the strength of the spin-orbit coupling; hence, it provides an excellent constraint on theoretical models of superheavy nuclei. To clarify competing theoretical scenarios, an experimental search for E 1 transitions in odd- A systems 275 , 277 Mt, 275 Hs, and 277 Ds is strongly recommended. peerReviewed
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2014-07-14 | Physical Review C |