Production and decay of269110

  title={Production and decay of269110},
  author={Sigurd Hofmann and Vasil Ninov and Fritz Peter Hessberger and Peter Armbruster and H. Folger and Gottfried M{\"u}nzenberg and H. J. Sch{\"o}tt and Andrey Popeko and A. V. Yeremin and A. N. Andreyev and {\vS}. {\vS}{\'a}r{\'o} and Rudolf Janik and Matti Leino},
  journal={Zeitschrift f{\"u}r Physik A Hadrons and Nuclei},
In an experiment carried out to identify element 110, we have observed anα-decay chain, that can be unambiguously assigned to269110. In a scries of preexperiments the excitation functions of the fusion reactions50Ti +208Pb→258104* and58Fe +208Pb→266108* were measured with high precision in order to get the optimum projectile energies for the production of these heavy elements. The cross-section maxima of the 1n evaporation channels were observed at excitation energies of 15.6 MeV and 13.4 MeV… Expand
Excitation function for the production of 265108 and 266109
The excitation function for the production of266109 by the reaction 58Fe + 209Bi was investigated. Its position and width could be reproduced using the same values (E* = 13.9 MeV; FWHM=4.8 MeV) asExpand
Synthesis of heavy and superheavy elements
SummaryIn two series of experiments at SHIP, six new elements (Z = 107–112) were synthesized via fusion reactions using lead or bismuth targets and 1n-deexcitation channels. The isotopes wereExpand
Review of even element super-heavy nuclei and search for element 120
Abstract.The reaction 54Cr$ + $248Cm was investigated at the velocity filter SHIP at GSI, Darmstadt, with the intention to study production and decay properties of isotopes of element 120. ThreeExpand
New elements - approaching
The search for new elements is part of the broader field of investigations of nuclei at the limits of stability. In two series of experiments at SHIP, six new elements were synthesized via fusionExpand
Synthesis of superheavy nuclei in 48Ca+244Pu interactions
This article reports the results of experiments aimed at producing hypothetical long-lived superheavy elements located near the spherical-shell closures with Z≥114 and N≥72. For the synthesis ofExpand
Techniques for the discovery of new elements
Abstract Search for new elements is part of the broader field of investigations of nuclei at the limits of stability. In two series of experiments at SHIP, six new elements ( Z = 107–112) wereExpand
On the limit of nuclear stability — The region of double magic100Sn and bound-state β-decay of187Re75+
Experiments which led to the discovery of the heaviest, self-conjugated double magic nucleus100Sn and the bound-state β-decay of completely ionized187Re are presented.100Sn was produced byExpand
The synthesis and properties of superheavy nuclei produced in the 48 Ca+ 244 Pu, 248 Cm reactions
We present the results of the experiments aimed at producing hypothetical long-lived superheavy elements located near the spherical shell closures with Z>-114 and N>-172. For the synthesis ofExpand
Decay properties of isomeric states in radium isotopes close to N = 126
Abstract.Isomeric states in 210-215Ra have been populated by the decay of the compound nuclei 216, 220Ra produced in irradiations of 204, 208Pb with 12C at Elab = (68-136)MeV. Published values forExpand
Synthesis of 292116 in the 248Cm + 48Ca reaction
We report on the observation of the first decay event of the new nuclide 292116 produced in an experiment devoted to the synthesis of Z=116 nuclei in the 248Cm + 48Ca reaction. The implantation of aExpand


Plans to identify heavy elements produced in reactions with cross-sections of 1 pb and below
Abstract Reactions for the production of heavy elements have been extensively studied since universal heavy ion accelerators became available. New separation and detection systems have beenExpand
Alpha decay studies of very neutron deficient isotopes of Hf, Ta, W, and Re
Very neutron deficient isotopes in the Hf-Re region were produced by bombarding targets of107, 109Ag,nat, 108, 110Pd, and103Rh with58Ni accelerated by the linear accelerator UNILAC at GSI. AfterExpand
Stability of heavy and superheavy elements
We review several important experimental and theoretical developments that during the past decade have revived interest in the stability properties of the heaviest elements. On the experimental sideExpand
Development of 207Pb, 208Pb and 209Bi target wheels in the synthesis of 107Ns, 108Hs and 109Mt
Abstract The development of 207Pb, 208Pb and 209Bi target wheels and their applications in heavy-ion fusion reactions are reviewed. In both fabrication and use, the centers of the evaporator orExpand
Fusion of heavy nuclei in a classical model
Abstract The fusion of heavy nuclei is analyzed in a classical potential model. A quasi-elastic two-body potential is derived from the liquid drop model with inclusion of a finite range ofExpand
Shell structure of the heaviest elements
Abstract The status of experimental and theoretical studies of the heaviest elements is reviewed. The single-particle structure of the heaviest nuclei with 95⩽ Z ⩽111 and 149⩽ N ⩽162 is investigatedExpand
The velocity filter ship, a separator of unslowed heavy ion fusion products
The velocity filter SHIP installed at the UNILAC (GSI Darmstadt) is described. It is used for the investigation of neutron deficient nuclei generated by heavy ion induced fusion. The two stage filterExpand
The 1993 atomic mass evaluation: (I) Atomic mass table
This paper is the first of a series of four. In it, a table is given to replace the 1983 atomic mass table. The differences with the earlier table are briefly discussed and information is given ofExpand
Note added in proof.
  • A. Eddy
  • Chemistry, Medicine
  • The EMBO journal
  • 1984