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Title: Remarks on the fission barriers of super-heavy nuclei

Shell-correction energies of super-heavy nuclei are approximated by using QαQα values of measured decay chains. Five decay chains were analyzed, which start at the isotopes 285Fl, 294118, 291Lv, 292Lv and 293Lv. The data are compared with predictions of macroscopic-microscopic models. Fission barriers are estimated that can be used to eliminate uncertainties in partial fission half-lives and in calculations of evaporation-residue cross-sections. In that calculations, fission probability of the compound nucleus is a major factor contributing to the total cross-section. The data also provide constraints on the cross-sections of capture and quasi-fission in the entrance channel of the fusion reaction. Here, arguments are presented that fusion reactions for synthesis of isotopes of elements 118 and 120 may have higher cross-sections than assumed so far.
Authors:
 [1] ;  [2] ;  [2] ;  [2] ;  [2] ;  [3] ;  [2] ;  [2] ;  [4] ;  [5] ;  [6] ;  [7] ;  [7] ;  [2] ;  [2] ;  [2] ;  [2] ;  [8] ;  [9] ;  [7] more »;  [10] ;  [11] ;  [12] ;  [13] ;  [2] ;  [13] ;  [2] ;  [7] ;  [7] ;  [4] ;  [2] ;  [4] ;  [14] ;  [12] « less
  1. GSI-Helmholtzzentrum fur Schwerionenforschung, Darmstadt (Germany); Goethe Univ., Frankfurt (Germany). Institut fur Physik
  2. GSI-Helmholtzzentrum fur Schwerionenforschung, Darmstadt (Germany)
  3. Comenius Univ., Bratislava (Slovakia). Dept. of Nuclear Physics and Biophysics
  4. Johannes Gutenberg Univ., Mainz (Germany)
  5. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States); Univ. of Tennessee, Knoxville, TN (United States)
  6. Vanderbilt Univ., Nashville, TN (United States). Dept. of Physics and Astronomy
  7. Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
  8. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States); Univ. of Warsaw (Poland)
  9. Univ. of Tennessee, Knoxville, TN (United States)
  10. RIKEN, Saitama (Japan). Nishina Center for Accelerator-Based Science
  11. Japan Atomic Energy Agency (JAEA), Tokai (Japan)
  12. Joint Inst. for Nuclear Research (JINR), Dubna (Russian Federation)
  13. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
  14. Univ. of Jyvaskyla (Finland). Dept. of Physics
Publication Date:
Report Number(s):
LLNL-JRNL-668657
Journal ID: ISSN 1434-6001
Grant/Contract Number:
AC52-07NA27344; 1/0576/13; APVV-0105-10
Type:
Accepted Manuscript
Journal Name:
European Physical Journal. A
Additional Journal Information:
Journal Volume: 52; Journal Issue: 4; Journal ID: ISSN 1434-6001
Publisher:
Springer
Research Org:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Sponsoring Org:
USDOE
Country of Publication:
United States
Language:
English
Subject:
73 NUCLEAR PHYSICS AND RADIATION PHYSICS; 38 RADIATION CHEMISTRY, RADIOCHEMISTRY, AND NUCLEAR CHEMISTRY
OSTI Identifier:
1410057