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

Abstract

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:
Research Org.:
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States); Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Nuclear Physics (NP)
OSTI Identifier:
1482453
Alternate Identifier(s):
OSTI ID: 1410057
Report Number(s):
LLNL-JRNL-668657
Journal ID: ISSN 1434-6001
Grant/Contract Number:  
AC05-00OR22725; AC52-07NA27344; 1/0576/13; APVV-0105-10
Resource 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
Country of Publication:
United States
Language:
English
Subject:
73 NUCLEAR PHYSICS AND RADIATION PHYSICS; 38 RADIATION CHEMISTRY, RADIOCHEMISTRY, AND NUCLEAR CHEMISTRY

Citation Formats

Hofmann, S., Heinz, S., Mann, R., Maurer, J., Münzenberg, G., Antalic, S., Barth, W., Dahl, L., Eberhardt, K., Grzywacz, R., Hamilton, J. H., Henderson, R. A., Kenneally, J. M., Kindler, B., Kojouharov, I., Lang, R., Lommel, B., Miernik, K., Miller, D., Moody, K. J., Morita, K., Nishio, K., Popeko, A. G., Roberto, J. B., Runke, J., Rykaczewski, K. P., Scheidenberger, C., Shaughnessy, D. A., Stoyer, M. A., Thörle-Pospiech, P., Tinschert, K., Trautmann, N., Uusitalo, J., and Yeremin, A. V. Remarks on the fission barriers of super-heavy nuclei. United States: N. p., 2016. Web. doi:10.1140/epja/i2016-16116-0.
Hofmann, S., Heinz, S., Mann, R., Maurer, J., Münzenberg, G., Antalic, S., Barth, W., Dahl, L., Eberhardt, K., Grzywacz, R., Hamilton, J. H., Henderson, R. A., Kenneally, J. M., Kindler, B., Kojouharov, I., Lang, R., Lommel, B., Miernik, K., Miller, D., Moody, K. J., Morita, K., Nishio, K., Popeko, A. G., Roberto, J. B., Runke, J., Rykaczewski, K. P., Scheidenberger, C., Shaughnessy, D. A., Stoyer, M. A., Thörle-Pospiech, P., Tinschert, K., Trautmann, N., Uusitalo, J., & Yeremin, A. V. Remarks on the fission barriers of super-heavy nuclei. United States. https://doi.org/10.1140/epja/i2016-16116-0
Hofmann, S., Heinz, S., Mann, R., Maurer, J., Münzenberg, G., Antalic, S., Barth, W., Dahl, L., Eberhardt, K., Grzywacz, R., Hamilton, J. H., Henderson, R. A., Kenneally, J. M., Kindler, B., Kojouharov, I., Lang, R., Lommel, B., Miernik, K., Miller, D., Moody, K. J., Morita, K., Nishio, K., Popeko, A. G., Roberto, J. B., Runke, J., Rykaczewski, K. P., Scheidenberger, C., Shaughnessy, D. A., Stoyer, M. A., Thörle-Pospiech, P., Tinschert, K., Trautmann, N., Uusitalo, J., and Yeremin, A. V. Wed . "Remarks on the fission barriers of super-heavy nuclei". United States. https://doi.org/10.1140/epja/i2016-16116-0. https://www.osti.gov/servlets/purl/1482453.
@article{osti_1482453,
title = {Remarks on the fission barriers of super-heavy nuclei},
author = {Hofmann, S. and Heinz, S. and Mann, R. and Maurer, J. and Münzenberg, G. and Antalic, S. and Barth, W. and Dahl, L. and Eberhardt, K. and Grzywacz, R. and Hamilton, J. H. and Henderson, R. A. and Kenneally, J. M. and Kindler, B. and Kojouharov, I. and Lang, R. and Lommel, B. and Miernik, K. and Miller, D. and Moody, K. J. and Morita, K. and Nishio, K. and Popeko, A. G. and Roberto, J. B. and Runke, J. and Rykaczewski, K. P. and Scheidenberger, C. and Shaughnessy, D. A. and Stoyer, M. A. and Thörle-Pospiech, P. and Tinschert, K. and Trautmann, N. and Uusitalo, J. and Yeremin, A. V.},
abstractNote = {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.},
doi = {10.1140/epja/i2016-16116-0},
journal = {European Physical Journal. A},
number = 4,
volume = 52,
place = {United States},
year = {Wed Apr 27 00:00:00 EDT 2016},
month = {Wed Apr 27 00:00:00 EDT 2016}
}

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Works referenced in this record:

Shell effects in nuclear masses and deformation energies
journal, April 1967


Fusion of heavy nuclei in a classical model
journal, October 1974


Deformed nuclei in a chiral model
journal, December 2002


Fission barriers of superheavy nuclei
journal, March 2002


Synthesis of the isotopes of elements 118 and 116 in the Cf 249 and Cm 245 + Ca 48 fusion reactions
journal, October 2006


Nuclear masses and deformations
journal, June 1966


Properties of the hypothetical spherical superheavy nuclei
journal, August 1997


Search for Superheavy Nuclei
journal, October 2013


Fission Barriers of Compound Superheavy Nuclei
journal, May 2009


Potential energy and spontaneous-fission half-lives for heavy and superheavy nuclei
journal, October 1989


Experiments on the synthesis of superheavy nuclei Fl 284 and Fl 285 in the Pu 239 , 240 + Ca 48 reactions
journal, September 2015


The discovery of the heaviest elements
journal, July 2000


Spontaneous-fission half-lives of deformed superheavy nuclei
journal, October 1995


New Superheavy Element Isotopes: Pu 242 ( Ca 48 , 5 n ) 1 285 14
journal, October 2010


Closed shells for Z > 82 and N > 126 in a diffuse potential well
journal, September 1966


Structure of Odd- N Superheavy Elements
journal, August 1999


Nuclear properties according to the Thomas-Fermi model
journal, May 1996


Description of structure and properties of superheavy nuclei
journal, January 2007

  • Sobiczewski, Adam; Pomorski, Krzysztof
  • Progress in Particle and Nuclear Physics, Vol. 58, Issue 1
  • DOI: 10.1016/j.ppnp.2006.05.001

Fission barriers at the end of the chart of the nuclides
journal, February 2015


The reaction 48Ca + 248Cm → 296116* studied at the GSI-SHIP
journal, May 2012


Nuclear Ground-State Masses and Deformations
journal, March 1995

  • Moller, P.; Nix, J. R.; Myers, W. D.
  • Atomic Data and Nuclear Data Tables, Vol. 59, Issue 2, p. 185-381
  • DOI: 10.1006/adnd.1995.1002

Fission Barrier of Superheavy Nuclei and Persistence of Shell Effects at High Spin: Cases of No 254 and Th 220
journal, December 2014


On the stability of superheavy nuclei against fission
journal, June 1969

  • Mosel, Ulrich; Greiner, Walter
  • Zeitschrift für Physik A Hadrons and nuclei, Vol. 222, Issue 3
  • DOI: 10.1007/BF01392125

Heavy-element fission barriers
journal, June 2009


Macroscopic potential-energy surfaces for arbitrarily oriented, deformed heavy ions
journal, August 1994


Heaviest nuclei from 48 Ca-induced reactions
journal, March 2007


Synthesis of superheavy nuclei: A search for new production reactions
journal, September 2008


Fission barriers for even-even superheavy nuclei
journal, July 2010


Calculated masses of heaviest nuclei
journal, June 2003

  • Muntian, I.; Patyk, Z.; Sobiczewski, A.
  • Physics of Atomic Nuclei, Vol. 66, Issue 6
  • DOI: 10.1134/1.1586412

How can one Synthesize the Element z = 120?
journal, April 2010

  • Siwek-WilczyŃSka, K.; Cap, T.; WilczyŃSki, J.
  • International Journal of Modern Physics E, Vol. 19, Issue 04
  • DOI: 10.1142/S021830131001490X

The Ame2012 atomic mass evaluation
journal, December 2012


Fusion-fission dynamics and perspectives of future experiments
journal, June 2003

  • Zagrebaev, V. I.; Itkis, M. G.; Oganessian, Yu. Ts.
  • Physics of Atomic Nuclei, Vol. 66, Issue 6
  • DOI: 10.1134/1.1586415

Nuclear Properties for Astrophysical and Radioactive-Ion-Beam Applications
journal, July 1997

  • MÖLler, P.; Nix, J. R.; Kratz, K. -L.
  • Atomic Data and Nuclear Data Tables, Vol. 66, Issue 2
  • DOI: 10.1006/adnd.1997.0746

The Ame2012 atomic mass evaluation
journal, December 2012


Calculations of the cross sections for the synthesis of new 293 296 118 isotopes in 249 252 Cf( 48 Ca, x n ) reactions
journal, September 2013


Systematic study of fission barriers of excited superheavy nuclei
journal, July 2009


Attempt to produce element 120 in the Pu 244 + Fe 58 reaction
journal, February 2009


Feature of production of new superheavy nuclei in actinide-based complete-fusion reactions
journal, June 2009


Cross sections for the production of superheavy nuclei
journal, December 2015


Production and Decay of the Heaviest Nuclei 1 293 , 294 17 and 1 294 18
journal, October 2012


Semiempirical shell model masses with magic number Z = 126 for translead elements with N <~ 126
journal, December 2000


Stability of superheavy nuclei and their possible occurrence in nature
journal, January 1969


Quasifission and fusion-fission in reactions with massive nuclei: Comparison of reactions leading to the Z = 120 element
journal, February 2009


SHE research at RIKEN/GARIS
journal, December 2015


Nuclear masses and deformations
journal, June 1966


Heaviest Nuclei from 48 Ca-induced Reactions
journal, September 2011


Nuclear Ground-State Masses and Deformations
text, January 1993


Works referencing / citing this record:

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

  • Ansari, Ahmad; Ghahramany, Nader
  • International Journal of Modern Physics E, Vol. 26, Issue 07
  • DOI: 10.1142/s0218301317500501

Eighty years of research on super-heavy nuclei
journal, January 2018


The discovery of elements 107 to 112
text, January 2016