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Introduction to workshop and the superheavy elements Witold Nazarewicz

One-Day Workshop On Nuclear Structure and Reactions (With Emphasis on Fusion, Fission, and Superheavy Elements) Joint Institute for Heavy Ion Research, Oak Ridge, Tennessee, USA Oak Ridge National Laboratory Bldg 6008, November 16, 2009. Introduction to workshop and the superheavy elements

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Introduction to workshop and the superheavy elements Witold Nazarewicz

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  1. One-Day Workshop On Nuclear Structure and Reactions (With Emphasis on Fusion, Fission, and Superheavy Elements) Joint Institute for Heavy Ion Research, Oak Ridge, Tennessee, USA Oak Ridge National Laboratory Bldg 6008, November 16, 2009 Introduction to workshop and the superheavy elements Witold Nazarewicz

  2. superheavy nuclei neutron stars Nuclear Landscape 126 stable nuclei 82 r-process known nuclei terra incognita 50 protons 82 rp-process 28 20 50 8 28 neutrons 2 20 8 2

  3. Limits of Mass and Charge 226Ra ENAM’08 238U 237Np 242Pu 245Cm 249Cf ENAM’04 244Pu + 48Ca 243Am 248Cm hot fusion …also: 286,287114 48Ca+242Pu from LBNL From Y. Oganessian …also: chemistry

  4. Z=112-118 Z=112-118 Act.+48Ca Ex=40-45 MeV Hot fusion Fusion cross sections and fusion probability Ex=12-15 MeV Cold fusion 1 event / year SHE Oganessian, ENAM’08

  5. available for chemical studies Act.+48Ca Pb+50Ti,…64Ni Yu. Oganessian. HE-research at FLNR. ENAM’08, Sept.7-13, 2008, Ryn, Poland

  6. Periodic Table of Elements 2009 Cn 113 114 115 116 118 112 Cn Z=112: Copernicium

  7.  decay of 277112165 1/2+ [611] Experiment: S. Hofmann et al. (GSI) 208Pb+70Zn Theory: S. Cwiok, W. Nazarewicz, P.H. Heenen HFB/SLy4+LN+odd-T 5/2+ [613] 3/2+ [611] 13/2- [716] 277112165 1/2+ [611] 5/2+ [613] 13/2- [716] Q=11.9 MeV 3/2+ [611] Exp: 11.7 MeV 11.9 MeV Phys. Rev. Lett. 83, 1108 (1999) 273110163 1/2+ [620] Q=11.1 MeV 10.3 MeV 3/2+ [622] 7/2+ [613] 9/2+ [615] Exp: 11.3 MeV 9.9 MeV 11/2- [725] 269108161 Q=9.1 MeV 1/2+ [620] 3/2+ [622] Exp: 9.4 MeV 9/2+ [615] 7/2+ [613] 265106159 11/2- [725] Q=8.7 MeV 8.3 MeV 1/2+ [620] Exp: 8.9 MeV 11/2- [725] 3/2+ [622] 7/2+ [613] 261104157 Q=8.2 MeV 8.6 MeV 11/2- [725] Exp: 8.7 MeV 7/2+ [613] 1/2+ [620] 257102155 3/2+ [622]

  8. lifetimes > 1y S. Cwiok, P.H. Heenen, W. Nazarewicz Nature, 433, 705 (2005)

  9. Superheavy Elements in Nuclear DFT long-lived SHE

  10. Pei et al., PRL 102, 192501 (2009)

  11. Pei et al., PRL 102, 192501 (2009) Sheikh et al., PRC 80, 011302(R) (2009)

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