Review of even element super-heavy nuclei and search for element 120

  title={Review of even element super-heavy nuclei and search for element 120},
  author={Sigurd Hofmann and S. Heinz and Robert B. Mann and Joachim Maurer and Gottfried M{\"u}nzenberg and S. Antalic and Winfried Barth and H. G. Burkhard and Ludwig Dahl and Klaus Eberhardt and Robert K. Grzywacz and J. H. Hamilton and Roger A. Henderson and Jacqueline M. Kenneally and B. Kindler and Ivan Kojouharov and R. Lang and B. Lommel and Krzysztof Miernik and D. Miller and Kenton J. Moody and Kosuke Morita and K. Nishio and A. G. Popeko and James B. Roberto and J{\"o}rg Runke and Krzysztof P. Rykaczewski and {\vS}. {\vS}{\'a}r{\'o} and Christoph Scheidenberger and H. J. Sch{\"o}tt and Dawn A. Shaughnessy and Mark A. Stoyer and Petra Th{\"o}rle-Pospiech and Klaus Tinschert and Norbert Trautmann and Juha Uusitalo and A. V. Yeremin},
  journal={The European Physical Journal A},
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. Three correlated signals were measured, which occurred within a period of 279ms. The heights of the signals correspond with the expectations for a decay sequence starting with an isotope of element 120. However, a complete decay chain cannot be established, since a signal from the implantation of the… 

α decay and cluster radioactivity of nuclei of interest to the synthesis of Z=119 , 120 isotopes

Super-heavy nuclei of interest for the forthcoming synthesis of the isotopes with Z=119, 120 are investigated. One of the very interesting latest experiments was performed at the velocity filter SHIP

Eighty years of research on super-heavy nuclei

Professor Walter Greiner, our mentor, colleague, and friend, passed away in the age of eighty. During his lifetime, the search for elements beyond uranium started and elements up to the so far

Studies on the synthesis of isotopes of superheavy element Lv (Z = 116)

Abstract.The probable projectile-target combinations for the synthesis of superheavy nucleus 296Lv found in the cold valley of 296Lv have been identified by studying the interaction barrier of the

Studies on heavy particle radioactivity from superheavy nuclei leading to doubly magic 304120 daughter nuclei

The alpha decay and heavy particle radioactivity of the isotopes of even–even superheavy nuclei with Z = 122–132 have been studied within Coulomb and proximity potential model. The predicted

Search for elements 119 and 120

A search for production of the superheavy elements with atomic numbers 119 and 120 was performed in the Ti50+Bk249 and Ti50+Cf249 fusion-evaporation reactions, respectively, at the gas-filled recoil

Synthesis and properties of isotopes of the transactinides

Abstract Isotopes of transactinide elements have to be synthesized in nuclear reactions with light or heavy beam particles. The efficient production by neutron capture and subsequent β− decay as it

Fusion-fission probabilities, cross sections, and structure notes of superheavy nuclei

Fusion – fission probabilities in the synthesis of heaviest elements are discussed in the context of the latest experimental reports. Cross sections for superheavy nuclei are evaluated using the

A comparative study of α-decay and spontaneous fission for Z = 120 superheavy isotopes

In this study, we have investigated the α-decay chains of even–even superheavy nuclei Z = 120 in the range of 290 ≤ A ≤ 304. The Hartree–Fock–Bogoliubov model is used to calculate the binding energy

Some critical remarks on a sequence of events interpreted to possibly originate from a decay chain of an element 120 isotope

Abstract.A sequence of three events observed in an irradiation of 248Cm with 54Cr at the velocity filter SHIP of the GSI - Helmholtzzentrum für Schwerionenforschung GmbH, 64291 Darmstadt, Germany,



Search for new isotopes of element 112 by irradiation of 238U with 48Ca

Abstract: The reaction 48Ca+238U was investigated at the recoil separator VASSILISSA at the Flerov Laboratory of Nuclear Reactions, JINR Dubna, in attempts to synthesize new isotopes of element 112.

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

The synthesis of element 116 in fusion-evaporation reactions of a 48Ca beam with radioactive 248Cm targets was studied at the velocity filter SHIP of GSI in Darmstadt. At excitation energies of the

Super-heavy nuclei

Scientifically based searches for elements beyond uranium started after the discovery of the neutron. Neutrons captured by uranium nuclei and subsequent decay, similarly as most of the elements were

Production and decay of269110

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

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. After

Super-heavy element research

The radioactive properties of the new nuclei, the isotopes of elements 112-118 as well as of their decay products, give evidence of the significant increase of the stability of the heavy nuclei with rise of their neutron number and approaching magic number N = 184.

Synthesis of nuclei of the superheavy element 114 in reactions induced by 48Ca

The stability of heavy nuclides, which tend to decay by α-emission and spontaneous fission, is determined by the structural properties of nuclear matter. Nuclear binding energies and lifetimes

Possibilities for synthesis of new isotopes of superheavy elements in fusion reactions

Background. In the “cold” fusion reactions based on the use of lead and bismuth targets, the proton-rich isotopes of superheavy (SH) elements up to Z = 113 have been produced. More neutron-rich

The new element 111

The new element 111 was produced and unambiguously identified in an experiment at SHIP, GSI Darmstadt. Three nuclei of the isotope272111 were observed in irradiations of209Bi targets with64Ni