Search results for "Element 115"

showing 3 items of 3 documents

Recoil-α-fission and recoil-α–α-fission events observed in the reaction 48Ca + 243Am

2016

Products of the fusion-evaporation reaction 48Ca + 243Am were studied with the TASISpec set-up at the gas-filled separator TASCA at the GSI Helmholtzzentrum für Schwerionenforschung, Darmstadt, Germany. Amongst the detected thirty correlated α-decay chains associated with the production of element Z=115, two recoil-α-fission and five recoil-α-α-fission events were observed. The latter five chains are similar to four such events reported from experiments performed at the Dubna gas-filled separator, and three such events reported from an experiment at the Berkeley gas-filled separator. The four chains observed at the Dubna gas-filled separator were assigned to start from the 2n-evaporation ch…

Nuclear and High Energy Physicsalpha decayFissionSuperheavy elementschemistry.chemical_elementSuperheavy Elementsnucl-exAtomic01 natural sciences7. Clean energyNuclear physicsParticle and Plasma PhysicsRecoil0103 physical sciencesNuclearElement 115α decayNuclear Experiment010306 general physicsUnunpentiumSpontaneous fissionPhysicsQuantum PhysicsUup010308 nuclear & particles physicsSpontaneous fissionMolecularNuclear & Particles PhysicsSuperheavy elementchemistryDecay chainAlpha decayAstronomical and Space SciencesExcitationNuclear Physics A
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Alpha-Photon Coincidence Spectroscopy Along Element 115 Decay Chains

2014

Produced in the reaction 48Ca+243Am, thirty correlated α-decay chains were observed in an experiment conducted at the GSI Helmholzzentrum fur Schwerionenforschung, Darmstadt, Germany. The decay chains are basically consistent with previous findings and are considered to originate from isotopes of element 115 with mass numbers 287, 288, and 289. A set-up aiming specifically for high-resolution charged particle and photon coincidence spectroscopy was placed behind the gas-filled separator TASCA. For the first time, γ rays as well as X-ray candidates were observed in prompt coincidence with the α-decay chains of element 115.

Physicselement 115PhotonIsotopealpha decayGeneral Physics and Astronomy7. Clean energyNuclear & Particles PhysicsCoincidenceCharged particleMathematical SciencesNuclear physicssuperheavy elementsgamma-ray spectroscopySubatomic PhysicsPhysical SciencesGamma spectroscopyddc:530Alpha decayDecay chainAtomic physicsSpectroscopy
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Structure of superheavy nuclei along decay chains of element 115

2014

[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 w…

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 statesExcitationPhysical Review C
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