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

Journal Article · · European Physical Journal. A
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  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

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.

Research Organization:
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States); Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Nuclear Physics (NP)
Grant/Contract Number:
AC05-00OR22725; AC52-07NA27344; 1/0576/13; APVV-0105-10
OSTI ID:
1482453
Alternate ID(s):
OSTI ID: 1410057
Report Number(s):
LLNL-JRNL-668657
Journal Information:
European Physical Journal. A, Vol. 52, Issue 4; ISSN 1434-6001
Publisher:
SpringerCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 26 works
Citation information provided by
Web of Science

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Cited By (8)

Eighty Years of Research on Super-Heavy Nuclei book November 2016
The discovery of elements 107 to 112 journal January 2016
Physics of even-even superheavy nuclei with 96 < Z < 110 in the quark-meson-coupling model journal October 2019
Review of even element super-heavy nuclei and search for element 120 journal June 2016
Spontaneous fission properties of superheavy elements journal April 2017
Production cross-sections of superheavy elements using nearly double magic nuclei as projectile journal July 2017
Eighty years of research on super-heavy nuclei journal January 2018
The discovery of elements 107 to 112 text January 2016

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