Exploring the fission barrier of superheavy nuclei in covariant density functional theory

ORAL

Abstract

Systematic calculations of the fission barriers with allowance of triaxial deformation have been performed within the covariant density functional theory for the super heavy region of the nuclear chart. Pairing is treated within the BCS approximation using seniority zero forces adjusted to empirical values of the pairing gap parameters. The analysis of the results showed that triaxiality doesn't lower the height of the inner fission barrier. The height of the inner fission barrier increases with increasing Z from 112 up to 120. The fission barrier height is around 5.5 -- 6 MeV in the Z=120 isotope chain. The doubly magic Z=120 N=172 nucleus has the largest value of the height of the inner fission barrier indicating its increased stability.

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Authors

  • Chris Perkins

    Univ. of California at Berkeley, North Carolina Central U. (NCCU), Triangle Universities Nuclear Laboratory (TUNL), Los Alamos National Laboratory, Lawrence Livermore National Laboratory, SJSU, LLNL, United States Naval Academy, Annapolis, USA, University of Dallas, USA, University of Kentucky, USA, ASU, UNC/TUNL, Univ. Tennessee, ORNL/ORAU, ORNL, ORNL/ORAU/Warsaw Univ., Mississippi State Univ., Louisiana State Univ., ORNL/Warsaw Univ., Vanderbilt Univ., UNRIB/ORAU, Vanderbilt Univ./LBNL, Univ. Tennessee/Warsaw Univ., GANIL, CENBG/CNRS/IN2P3, ANL, U. Jyv\"alsky\"a, CENPA, U. Washington, TRIUMF, IFIC, CSIC-Univ. Valencia, Argonne Nat. Lab., The University of Tennessee at Knoxville, Dept. of Physics (TUNL), Duke University, USA, Wright Nucl. Structure Lab., Yale University, USA, Dept. of Nucl. Physics, Australian National University (ANU), Australia, Dept. Chemistry, University of Kentucky, USA, Dept. of Physics and Astronomy, University of Kentucky, USA, Dept. of Physics \& Astronomy and Chemistry, University of Kentucky, USA, Yale University, Bonn University, Germany, Rutgers University, Millsaps College, Texas A\&M University, Oak Ridge National Laboratory, Oregon State University, UC Berkeley, NSCL/MSU, TA\&MU, RIKEN, Japan, University of Tennessee, Knoxville, BHSU, Sanford Lab, UMass Lowell, LSU, UTK, UTK, ORNL, ORNL, ORAU, ORNL, ORAU, UW, Michigan State University, Pacific Northwest National Laboratory, University of Chicago, Osaka U., Tokyo Inst. of Tech., UND, Konan U, Kyoto U., Konan U., Tohoku U., KVI, University of Stuttgart, IFIN-HH, TUNL, University of Kentucky, TU-Darmstadt, Yale, Surrey, Istituto Nazionale Fisica Nucleare Laboratori Nazionali del Sud, Florida State University, University of Jyv\"askyla, NSCL / MSU, Hope College, Central Michigan University, Gettysburg College, Concordia College, Argonne National Laboratory and University of Chicago and JINA, Hebrew University, Argonne National Laboratory and Western Michigan University, Argonne National Laboratory and JINA, Western Michigan University, Argonne National Laboratory, Universidad Nacional Autonoma de Mexico, State Univ. of New York at Oswego, Department of Physics, State University of New York at Oswego, Physics Division, Oak Ridge National Laboratory, CNRS, Indiana University, LANL, CEA-Saclay, FRIB/MSU, Surrey, Mississippi State University, Technische Universitat Munchen, Univ. of Notre Dame, Univ. of Wisconsin - La Crosse, Kocaeli University, Turkey, RIKEN, NSCL, University of Notre Dame, ATOMKI, Hungary, The University of Alabama, Arizona State University, SUNY Stony Brook, United States Naval Research Laboratory, Ruhr-Universit\"at Bochum, UNC-Wilmington, Tulane U., MIT, Waterloo U., NIST, U. Tennessee, Warsaw Univ., U. Tennessee, ORNL, ORAU, Warsaw University, Mississippi State, Louisiana State, ORNL, Warsaw Univ., Vanderbilt, LBNL, JINR, Tsinghua Univ., University of Massachusetts Lowell, Tsinghua University, Lawrence Berkeley National Laboratory, Vanderbilt University and Lawrence Berkeley National Laboratory, Peking University, Vanderbilt University, Niewodniczanski Institute for Nuclear Physics, University of Maryland, University of Sofia, University of Washington, University Of Notre Dame, LBNL/Vanderbilt University, Argonne National Lab, U. Mass. Lowell, Radiation Monitoring Devices Inc., RMD Inc., IKP, University of Cologne, DSM/Irfu/SPhN, CEA-Saclay, McGill U., U. of Manitoba, U. of Chicago, Northwestern U., Universitat Giessen, GSI, TU M\"unchen, Michigan State Univ., Univ. Mainz, National Superconducting Cyclotron Laboratory (NSCL), Lund Univ., Univ. of Edinburgh, Universitat Mainz, Technische Universitat Muenchen, Helmholtzzentrum fur Schwerionenforschung (GSI), University of Keele, NCSU and TUNL, Duke U. and TUNL, GSI Helmholtzzentrum fur Schwerionenforschung GmbH, 64291 Darmstadt, Germany, George Washington University, Duke University and TUNL, U. Massachusetts Lowell, Argonne National Lab., Australian National Univ., Oak Ridge Associated Universities, University of Tennessee at Knoxville, Center for Theoretical Physics, Sloane Physics Laboratory, Yale University, New Haven, CT 06520-8120, USA, Rice University, Department of Physics, University of Jyvaskyla, Finland, School of Physics, University of Edinburgh, Edinburgh, United Kingdom, Cyclotron Institute, Texas A\&M University, Texas, United States, INFN-LNS, JAEA, Kyushu U., CNS, U of Tokyo, Hoseo U., Chonbuk Natl. U., Hanyang U., Seoul Natl. U., Chung-Ang U., Univ. of Stellenbosch, iThemba LABS, Univ. of Witwatersrand, iThema LABS, Univ. of Cape Town, Univ. of Witwatersand, KVI Univ. of Groningen, NSCL, Michigan State University, East Lansing, MI 48824, USA, Helmholtz-Insitut Mainz, Johannes Gutenberg-Universit\"at Mainz, D-55128 Mainz, Germany, KVI Groningen, U S Naval Academy, University of Surrey, Cyclotron Institute, Texas A\&M University, JIHIR, UNIRIB, ICN-UNAM, FSU, U. of Surrey, NSCL, MSU, Departments of Chemistry and Physics \& Astronomy, University of Kentucky, Lexington, KY 40506, School of Physics, Georgia Institute of Technology, USA, Dept. of Physics, University of Guelph, Canada, Dept. of Chemistry, University of Kentucky, USA, Depts. of Physics \& Astronomy and Chemistry, University of Kentucky, USA, UNIRIB/ORAU, ORAU, U Richmond, WNSL Yale, IKP Univ. Cologne, Univ. York, Cyclotron Institute at Texas A\&M University, FRIB, MSU, UTK, UW, Department of Physics and Applied Physics, University of Massachusetts Lowell, Nuclear Engineering Division, Argonne National Laboratory, Physics Division, Argonne National Laboratory, Universite Paris Sud, University of Michigan, National Superconducting Cyclotron Laboratory, Department of Physics, University of Notre Dame, Notre Dame, IN 46556, Tennessee Technological University, University of Tennessee, Colorado School Of Mines, Louisiana State University, O.R.A.U., Oak Ridge Nat. Lab, Louisiana St. U., Col. Sch. of Mines, Ohio U., Rutgers, U. Tenn., Dept. of Physics \& Astronomy, Texas A\&M University, Rutgers U., U. Tenn.-Knoxville, Tenn. Tech. U., U of TN, ORNL, U of TN, TTU, CO School of Mines, University of Colorado, Muhlenberg College, Indiana Univ. South Bend, Cyclotron Institute A\&M University, Westmont College, Oak Ridge National Lab, Kyoto University, Texas A\&M University Cyclotron Institute, NSCL, Michigan State University, Collider-Accelerator Division, Brookhaven National Laboratory, Institut f\"ur Physik, Universit\"at Mainz, Lousiana State University Baton Rouge, Colorado School of Mines, Golden, CO, Ohio University, Athens, OH, Rutgers University, Piscataway, NJ, University of Tennesse Knoxville, WFU and TUNL, UNC and TUNL, Iowa State University, University of Arizona, University of Toronto, Universita di Napoli, Universita degli Studi di Napoli ``Frederico II'' and INFN, University of Toronto, University of Notre Dame, Lousiana State University, University of Rochester, Institut fur Kernphysik, Darmstadt, WNSL-Yale U., U. of M., ANL/U. of M., Manchester, (Miss S.U.), (ORNL), (K.U. Leuven), (LLBL), (UT), (NSCL/MSU), ICNM, Krakow, U. of Maryland, U. of Maryland/ANL, Washington University, Ganil, INFN, Catania, Italy, NCSL/MSU, WU, IU, WMU, Variable Energy Cyclotron Centre, MSU / NSCL, INFN, Cyclotron Institute Texas A\&M University, Colorado School of Mines, ANL/University of Chicago/JINA, Argonne National Lab, JINA, Western Michigan University, ANL, Khalifa University of Science, Technology \& Research, Indian Institute of Technology Ropar, NSCL, JINA, Department of Physics and Astronomy, Michigan State University, Physics Department, Kalamazoo College, Niigata University, KUSTAR, UAE, Osaka University, Kalamazoo College, Physics Division, Argonne National Laboratory, Argonne, IL 60439, UGC-DAE Consortium for Science Research, Kolkata, India, STARS-LIBERACE Collaboration, University of Richmond, Lawrence Berkeley National Laboratory - Berkeley, CA 94720, U. of Rochester, Texas A$\&$M Cyclotron Institute, ANL/WMU, ANL/JINA, U of Manchester

  • Hazem Abusara

    Mississippi Sate University

  • Chris Perkins

    Univ. of California at Berkeley, North Carolina Central U. (NCCU), Triangle Universities Nuclear Laboratory (TUNL), Los Alamos National Laboratory, Lawrence Livermore National Laboratory, SJSU, LLNL, United States Naval Academy, Annapolis, USA, University of Dallas, USA, University of Kentucky, USA, ASU, UNC/TUNL, Univ. Tennessee, ORNL/ORAU, ORNL, ORNL/ORAU/Warsaw Univ., Mississippi State Univ., Louisiana State Univ., ORNL/Warsaw Univ., Vanderbilt Univ., UNRIB/ORAU, Vanderbilt Univ./LBNL, Univ. Tennessee/Warsaw Univ., GANIL, CENBG/CNRS/IN2P3, ANL, U. Jyv\"alsky\"a, CENPA, U. Washington, TRIUMF, IFIC, CSIC-Univ. Valencia, Argonne Nat. Lab., The University of Tennessee at Knoxville, Dept. of Physics (TUNL), Duke University, USA, Wright Nucl. Structure Lab., Yale University, USA, Dept. of Nucl. Physics, Australian National University (ANU), Australia, Dept. Chemistry, University of Kentucky, USA, Dept. of Physics and Astronomy, University of Kentucky, USA, Dept. of Physics \& Astronomy and Chemistry, University of Kentucky, USA, Yale University, Bonn University, Germany, Rutgers University, Millsaps College, Texas A\&M University, Oak Ridge National Laboratory, Oregon State University, UC Berkeley, NSCL/MSU, TA\&MU, RIKEN, Japan, University of Tennessee, Knoxville, BHSU, Sanford Lab, UMass Lowell, LSU, UTK, UTK, ORNL, ORNL, ORAU, ORNL, ORAU, UW, Michigan State University, Pacific Northwest National Laboratory, University of Chicago, Osaka U., Tokyo Inst. of Tech., UND, Konan U, Kyoto U., Konan U., Tohoku U., KVI, University of Stuttgart, IFIN-HH, TUNL, University of Kentucky, TU-Darmstadt, Yale, Surrey, Istituto Nazionale Fisica Nucleare Laboratori Nazionali del Sud, Florida State University, University of Jyv\"askyla, NSCL / MSU, Hope College, Central Michigan University, Gettysburg College, Concordia College, Argonne National Laboratory and University of Chicago and JINA, Hebrew University, Argonne National Laboratory and Western Michigan University, Argonne National Laboratory and JINA, Western Michigan University, Argonne National Laboratory, Universidad Nacional Autonoma de Mexico, State Univ. of New York at Oswego, Department of Physics, State University of New York at Oswego, Physics Division, Oak Ridge National Laboratory, CNRS, Indiana University, LANL, CEA-Saclay, FRIB/MSU, Surrey, Mississippi State University, Technische Universitat Munchen, Univ. of Notre Dame, Univ. of Wisconsin - La Crosse, Kocaeli University, Turkey, RIKEN, NSCL, University of Notre Dame, ATOMKI, Hungary, The University of Alabama, Arizona State University, SUNY Stony Brook, United States Naval Research Laboratory, Ruhr-Universit\"at Bochum, UNC-Wilmington, Tulane U., MIT, Waterloo U., NIST, U. Tennessee, Warsaw Univ., U. Tennessee, ORNL, ORAU, Warsaw University, Mississippi State, Louisiana State, ORNL, Warsaw Univ., Vanderbilt, LBNL, JINR, Tsinghua Univ., University of Massachusetts Lowell, Tsinghua University, Lawrence Berkeley National Laboratory, Vanderbilt University and Lawrence Berkeley National Laboratory, Peking University, Vanderbilt University, Niewodniczanski Institute for Nuclear Physics, University of Maryland, University of Sofia, University of Washington, University Of Notre Dame, LBNL/Vanderbilt University, Argonne National Lab, U. Mass. Lowell, Radiation Monitoring Devices Inc., RMD Inc., IKP, University of Cologne, DSM/Irfu/SPhN, CEA-Saclay, McGill U., U. of Manitoba, U. of Chicago, Northwestern U., Universitat Giessen, GSI, TU M\"unchen, Michigan State Univ., Univ. Mainz, National Superconducting Cyclotron Laboratory (NSCL), Lund Univ., Univ. of Edinburgh, Universitat Mainz, Technische Universitat Muenchen, Helmholtzzentrum fur Schwerionenforschung (GSI), University of Keele, NCSU and TUNL, Duke U. and TUNL, GSI Helmholtzzentrum fur Schwerionenforschung GmbH, 64291 Darmstadt, Germany, George Washington University, Duke University and TUNL, U. Massachusetts Lowell, Argonne National Lab., Australian National Univ., Oak Ridge Associated Universities, University of Tennessee at Knoxville, Center for Theoretical Physics, Sloane Physics Laboratory, Yale University, New Haven, CT 06520-8120, USA, Rice University, Department of Physics, University of Jyvaskyla, Finland, School of Physics, University of Edinburgh, Edinburgh, United Kingdom, Cyclotron Institute, Texas A\&M University, Texas, United States, INFN-LNS, JAEA, Kyushu U., CNS, U of Tokyo, Hoseo U., Chonbuk Natl. U., Hanyang U., Seoul Natl. U., Chung-Ang U., Univ. of Stellenbosch, iThemba LABS, Univ. of Witwatersrand, iThema LABS, Univ. of Cape Town, Univ. of Witwatersand, KVI Univ. of Groningen, NSCL, Michigan State University, East Lansing, MI 48824, USA, Helmholtz-Insitut Mainz, Johannes Gutenberg-Universit\"at Mainz, D-55128 Mainz, Germany, KVI Groningen, U S Naval Academy, University of Surrey, Cyclotron Institute, Texas A\&M University, JIHIR, UNIRIB, ICN-UNAM, FSU, U. of Surrey, NSCL, MSU, Departments of Chemistry and Physics \& Astronomy, University of Kentucky, Lexington, KY 40506, School of Physics, Georgia Institute of Technology, USA, Dept. of Physics, University of Guelph, Canada, Dept. of Chemistry, University of Kentucky, USA, Depts. of Physics \& Astronomy and Chemistry, University of Kentucky, USA, UNIRIB/ORAU, ORAU, U Richmond, WNSL Yale, IKP Univ. Cologne, Univ. York, Cyclotron Institute at Texas A\&M University, FRIB, MSU, UTK, UW, Department of Physics and Applied Physics, University of Massachusetts Lowell, Nuclear Engineering Division, Argonne National Laboratory, Physics Division, Argonne National Laboratory, Universite Paris Sud, University of Michigan, National Superconducting Cyclotron Laboratory, Department of Physics, University of Notre Dame, Notre Dame, IN 46556, Tennessee Technological University, University of Tennessee, Colorado School Of Mines, Louisiana State University, O.R.A.U., Oak Ridge Nat. Lab, Louisiana St. U., Col. Sch. of Mines, Ohio U., Rutgers, U. Tenn., Dept. of Physics \& Astronomy, Texas A\&M University, Rutgers U., U. Tenn.-Knoxville, Tenn. Tech. U., U of TN, ORNL, U of TN, TTU, CO School of Mines, University of Colorado, Muhlenberg College, Indiana Univ. South Bend, Cyclotron Institute A\&M University, Westmont College, Oak Ridge National Lab, Kyoto University, Texas A\&M University Cyclotron Institute, NSCL, Michigan State University, Collider-Accelerator Division, Brookhaven National Laboratory, Institut f\"ur Physik, Universit\"at Mainz, Lousiana State University Baton Rouge, Colorado School of Mines, Golden, CO, Ohio University, Athens, OH, Rutgers University, Piscataway, NJ, University of Tennesse Knoxville, WFU and TUNL, UNC and TUNL, Iowa State University, University of Arizona, University of Toronto, Universita di Napoli, Universita degli Studi di Napoli ``Frederico II'' and INFN, University of Toronto, University of Notre Dame, Lousiana State University, University of Rochester, Institut fur Kernphysik, Darmstadt, WNSL-Yale U., U. of M., ANL/U. of M., Manchester, (Miss S.U.), (ORNL), (K.U. Leuven), (LLBL), (UT), (NSCL/MSU), ICNM, Krakow, U. of Maryland, U. of Maryland/ANL, Washington University, Ganil, INFN, Catania, Italy, NCSL/MSU, WU, IU, WMU, Variable Energy Cyclotron Centre, MSU / NSCL, INFN, Cyclotron Institute Texas A\&M University, Colorado School of Mines, ANL/University of Chicago/JINA, Argonne National Lab, JINA, Western Michigan University, ANL, Khalifa University of Science, Technology \& Research, Indian Institute of Technology Ropar, NSCL, JINA, Department of Physics and Astronomy, Michigan State University, Physics Department, Kalamazoo College, Niigata University, KUSTAR, UAE, Osaka University, Kalamazoo College, Physics Division, Argonne National Laboratory, Argonne, IL 60439, UGC-DAE Consortium for Science Research, Kolkata, India, STARS-LIBERACE Collaboration, University of Richmond, Lawrence Berkeley National Laboratory - Berkeley, CA 94720, U. of Rochester, Texas A$\&$M Cyclotron Institute, ANL/WMU, ANL/JINA, U of Manchester