Speaker
Prof.
Andreas Türler
(Paul Scherrer Institute and Bern University, CH-5232 VILLIGEN PSI, SWITZERLAND)
Description
The nuclear fusion reactions 244-Pu(48-Ca,3n)289-114 and 244-Pu(48-Ca, 4n)288-114 were studied at the new, highly efficient gas-filled recoil separator TASCA. The large number of thirteen observed decay chains assigned to 288-114 and 289-114 enabled reliable cross sections measurements. The highest cross section was 8.2 (+4.0 / -2.8) pb measured for the 4n evaporation channel. The new nucleus 277-Hs was observed. It decayed by spontaneous fission after a lifetime of 4.5 ms. Model calculations, which reproduce the properties of nuclides in the region around longer-lived deformed doubly-magic 270-Hs well suggest 277-Hs to be located near a minimum of shell stabilization between this island of deformed nuclei and the island of stability of spherical superheavy nuclei.
Primary authors
Dr
Alexander Yakushev
(Technische Universität München, 85748 GARCHING, GERMANY)
Prof.
Andreas Türler
(Paul Scherrer Institute and Bern University, CH-5232 VILLIGEN PSI, SWITZERLAND)
Prof.
Christoph Düllmann
(Gesellschaft für Schwerionenforschung mbH, 64291 DARMSTADT, GERMANY)
Prof.
Jens-Volker Kratz
(Johannes Gutenberg-Universität Mainz, 55128 MAINZ, GERMANY)
Dr
Klaus Eberhardt
(Johannes Gutenberg-Universität Mainz, 55128 MAINZ, GERMANY)
Dr
Matthias Schädel
(1Gesellschaft für Schwerionenforschung mbH, 64291 DARMSTADT, GERMANY)
Co-authors
Mr
Alexander Gorshkov
(2Technische Universität München, 85748 GARCHING, GERMANY)
Dr
Andrej Semchenkov
(University of Oslo, 0315 OSLO, NORWAY)
Ms
Annett Hübner
(Gesellschaft für Schwerionenforschung mbH, 64291 DARMSTADT, GERMANY)
Dr
Bettina Lommel
(Gesellschaft für Schwerionenforschung mbH, 64291 DARMSTADT, GERMANY)
Dr
Birgit Kindler
(Gesellschaft für Schwerionenforschung mbH, 64291 DARMSTADT, GERMANY)
Mr
Daniel Hild
(Johannes Gutenberg-Universität Mainz, 55128 MAINZ, GERMANY)
Dr
Dieter Ackermann
(Gesellschaft für Schwerionenforschung mbH, 64291 DARMSTADT, GERMANY)
Mr
Dirk Liebe
(Johannes Gutenberg-Universität Mainz, 55128 MAINZ, GERMANY)
Prof.
Dirk Rudolph
(Lund University, 22100 LUND, SWEDEN)
Mr
E. Parr
(University of Liverpool, LIVERPOOL, L69 7ZE, UK)
Mr
Egon Jäger
(Gesellschaft für Schwerionenforschung mbH, 64291 DARMSTADT, GERMANY)
Mr
Erwin Schimpf
(Gesellschaft für Schwerionenforschung mbH, 64291 DARMSTADT, GERMANY)
Dr
Fritz-P. Heßberger
(Gesellschaft für Schwerionenforschung mbH, 64291 DARMSTADT, GERMANY)
Ms
Gitta Schausten
(Gesellschaft für Schwerionenforschung mbH, 64291 DARMSTADT, GERMANY)
Dr
Hans Essel
(Gesellschaft für Schwerionenforschung mbH, 64291 DARMSTADT, GERMANY)
Prof.
Heino Nitsche
(Lawrence Berkeley National Laboratory, BERKELEY, California 94720, USA)
Dr
Jacklyn Marie Gates
(2Technische Universität München, 85748 GARCHING, GERMANY)
Dr
Jadambaa Khuyagbaatar
(Gesellschaft für Schwerionenforschung mbH, 64291 DARMSTADT, GERMANY)
Dr
Jan Dvorak
(Lawrence Berkeley National Laboratory, BERKELEY, California 94720, USA)
Prof.
Jon Petter Omtvedt
(University of Oslo, 0315 OSLO, NORWAY)
Dr
Juha Uusitalo
(University of Jyväskylä, 40014 JYVÄSKYLÄ, FINLAND)
Mrs
Julia Even
(Johannes Gutenberg-Universität Mainz, 55128 MAINZ, GERMANY)
Ms
Jutta Steiner
(Gesellschaft für Schwerionenforschung mbH, 64291 DARMSTADT, GERMANY)
Mr
Jörg Krier
(Gesellschaft für Schwerionenforschung mbH, 64291 DARMSTADT, GERMANY)
Mr
Jörg Runke
(Johannes Gutenberg-Universität Mainz, 55128 MAINZ, GERMANY)
Dr
Kenneth E. Gregorich
(Lawrence Berkeley National Laboratory, BERKELEY, California 94720, USA)
Dr
Lise Lotte Andersson
(University of Liverpool, LIVERPOOL, L69 7ZE, UK)
Dr
M. Wegrzecki
(Institute of Electron Technology, 02-668 WARSAW, POLAND)
Dr
Michael Block
(Gesellschaft für Schwerionenforschung mbH, 64291 DARMSTADT, GERMANY)
Dr
Moitri Maiti
(Saha Institute of Nuclear Physics, KOLKATA-700064, INDIA)
Dr
Nikolaus Kurz
(Gesellschaft für Schwerionenforschung mbH, 64291 DARMSTADT, GERMANY)
Dr
Norbert Wiehl
(Johannes Gutenberg-Universität Mainz, 55128 MAINZ, GERMANY)
Mr
Paul Ellison
(Lawrence Berkeley National Laboratory, BERKELEY, California 94720, USA)
Ms
Petra Thörle-Pospiech
(Johannes Gutenberg-Universität Mainz, 55128 MAINZ, GERMANY)
Mr
Reimar Graeger
(2Technische Universität München, 85748 GARCHING, GERMANY)
Prof.
Rodi-D. Herzberg
(University of Liverpool, LIVERPOOL, L69 7ZE, UK)
Prof.
Susanta Lahiri
(Saha Institute of Nuclear Physics, KOLKATA-700064, INDIA)
Mr
Willi Hartmann
(Gesellschaft für Schwerionenforschung mbH, 64291 DARMSTADT, GERMANY)
Dr
Willy Brüchle
(Gesellschaft für Schwerionenforschung mbH, 64291 DARMSTADT, GERMANY)
