Spectroscopy of Element 115 Decay Chains

2013/09/10 by D. Rudolph, U. Forsberg, P. Golubev +48 · 8 citations
Physics and Astronomy · #Nuclear physics research studies #Quantum Chromodynamics and Particle Interactions #Atomic and Molecular Physics #Spectroscopy #Decay chain #Coincidence #Physics #Excitation #Isotope #Monte Carlo method #Nuclear fusion #Nuclear physics #Atomic physics

paper · doi:10.1103/physrevlett.111.112502

openalex publication_date 2013/09/10 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/30

Abstract

A high-resolution α, x-ray, and γ-ray coincidence spectroscopy experiment was conducted at the GSI Helmholtzzentrum für Schwerionenforschung. Thirty correlated α-decay chains were detected following the fusion-evaporation reaction 48Ca + 243Am. The observations are consistent with previous assignments of similar decay chains to originate from element Z=115. For the first time, precise spectroscopy allows the derivation of excitation schemes of isotopes along the decay chains starting with elements Z>112. Comprehensive Monte Carlo simulations accompany the data analysis. Nuclear structure models provide a first level interpretation.

Citations

• New Superheavy Element Isotopes:Pu<mml:mprescripts/><mml:none/>242(Ca<mml:mprescripts/><mml:none/>48,5n)1<mml:mprescripts/><mml:none/>28514
• Shape coexistence and triaxiality in the superheavy nuclei
• Synthesis of a New Element with Atomic NumberZ=117
• Dirac-Fock-Slater calculations for the elements Z = 100, fermium, to Z = 173
• X-Ray Identification of Element 104
• Structure of Odd-NSuperheavy Elements
• Discovery of the elements with atomic numbers greater than or equal to 113 (IUPAC Technical Report)
• Heaviest nuclei from48Ca-induced reactions
• Experiments on the synthesis of element 115 in the reactionAm<mml:mprescripts/><mml:none/>243(Ca<mml:mprescripts/><mml:none/>48,xn)115<mml:mprescripts/><mml:none/>291−x

Cited by

• New isotope Mc<mml:mprescripts/><mml:none/>286 produced in the Am<mml:mprescripts/><mml:none/>243+Ca<mml:mprescripts/><mml:none/>48 reaction
• Synthesis and properties of isotopes of the transactinides
• 48Ca+249Bk fusion reaction leading to element Z = 117: long-lived α-decaying 270Db and discovery of 266Lr.
• Spectroscopy along Flerovium Decay Chains: Discovery ofDs<mml:mprescripts/><mml:none/>280and an Excited State inCn<mml:mprescripts/><mml:none/>282
• Decay spectroscopy of element 115 daughters:Rg<mml:mprescripts/><mml:none/>280→Mt<mml:mprescripts/><mml:none/>276andMt<mml:mprescripts/><mml:none/>276→Bh<mml:mprescripts/><mml:none/>272
• Recoil-α-fission and recoil-α–α-fission events observed in the reaction 48Ca + 243Am
• Fusion reaction Ca<mml:mprescripts/><mml:none/>48+Bk<mml:mprescripts/><mml:none/>249 leading to formation of the element Ts (Z=117)
• Nihonium [wikipedia]

Related

• A new assessment of the alleged link between element 115 and element 117 decay chains
• Spectroscopy along Flerovium Decay Chains: Discovery ofDs<mml:mprescripts/><mml:none/>280and an Excited State inCn<mml:mprescripts/><mml:none/>282
• 48Ca+249Bk fusion reaction leading to element Z = 117: long-lived α-decaying 270Db and discovery of 266Lr.
• Decay spectroscopy of element 115 daughters:Rg<mml:mprescripts/><mml:none/>280→Mt<mml:mprescripts/><mml:none/>276andMt<mml:mprescripts/><mml:none/>276→Bh<mml:mprescripts/><mml:none/>272
• Method of active correlations in the experiment 249Cf+48Ca->297118 +3n