First Superheavy Element Experiments at the GSI Recoil Separator TASCA: The Production and Decay of Element 114 in the 244Pu(48Ca,3-4n) Reaction

  title={First Superheavy Element Experiments at the GSI Recoil Separator TASCA: The Production and Decay of Element 114 in the 244Pu(48Ca,3-4n) Reaction},
  author={J. Gates and Ch. E. Duellmann and M. Sch{\"a}del and A. Yakushev and A. T{\"u}rler and K. Eberhardt and J. Kratz and D. Ackermann and L. Andersson and M. Block and W. Br{\"u}chle and J. Dvorak and H. Essel and P. Ellison and J. Even and U. Forsberg and J. Gellanki and A. Gorshkov and R. Graeger and K. Gregorich and W. Hartmann and R. Herzberg and F. Hessberger and D. Hild and A. Huebner and E. J{\"a}ger and J. Khuyagbaatar and B. Kindler and J. Krier and N. Kurz and S. Lahiri and D. Liebe and B. Lommel and M. Maiti and H. Nitsche and J. Omtvedt and E. Parr and D. Rudolph and J. Runke and H. Schaffner and B. Schausten and E. Schimpf and A. Semchenkov and J. Steiner and P. Th{\"o}rle-Pospiech and J. Uusitalo and M. Węgrzecki and N. Wiehl},
  journal={Physical Review C},
Experiments with the new recoil separator, Transactinide Separator and Chemistry Apparatus (TASCA), at the GSI were performed by using beams of Ca-48 to irradiate targets of Pb206-208, which led to the production of No252-254 isotopes. These studies allowed for evaluation of the performance of TASCA when coupled to a new detector and electronics system. By following these studies, the isotopes of element 114 ((288-291)114) were produced in irradiations of Pu-244 targets with Ca-48 beams at… Expand
Synthesis of superheavy elements at the Dubna gas-filled recoil separator
A survey of experiments at the Dubna gas-filled recoil separator (Laboratory of Nuclear Reactions, JINR, Dubna) aimed at the detection and study of the “island of stability” of superheavy nucleiExpand
Superheavy nuclei from 48 Ca-induced reactions
Abstract The discovery and investigation of the new region of superheavy nuclei at the DGFRS separator based on fusion reactions of 48 Ca with 238 U– 249 Cf target nuclei are reviewed. The productionExpand
Synthesis of superheavy nuclei: Obstacles and opportunities
There are only 3 methods for the production of heavy and superheavy (SH) nuclei, namely, fusion reactions, a sequence of neutron capture and beta(-) decay and multinucleon transfer reactions. LowExpand
Superheavy element studies with preseparated isotopes
Abstract In recent years, significant progress in the field of superheavy element research has been achieved thanks to a novel combination of techniques from different fields. This “physicalExpand
Main restrictions in the synthesis of new superheavy elements: Quasifission and/or fusion fission
Abstract.The synthesis of superheavy elements stimulates the effort to study the peculiarities of the complete fusion with massive nuclei and to improve theoretical models in order to extractExpand
Fusion reaction Ca 48 + Bk 249 leading to formation of the element Ts (Z=117)
The heaviest currently known nuclei, which have up to 118 protons, have been produced in 48Ca induced reactions with actinide targets. Among them, the element tennessine (Ts), which has 117 protons,Expand
Study of non-fusion products in the Ti50+Cf249 reaction
The isotopic distribution of nuclei produced in the 50Ti + 249Cf reaction has been studied at the gas-filled recoil separator TASCA at GSI Darmstadt, which separates ions according to differences inExpand
Superheavy Element Studies with TASCA at GSI: Spectroscopy of Element 115 Decay Chains
Experimental campaigns on investigations of the superheavy elements 115, 117, 119, and 120 were conducted 2011 and 2012 at the gas-filled “TransActinide Separator and Chemistry Apparatus” (TASCA) atExpand
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 recoilExpand
Future of superheavy element research: Which nuclei could be synthesized within the next few years?
Low values of the fusion cross sections and very short half-lives of nuclei with Z>120 put obstacles in synthesis of new elements. Different nuclear reactions (fusion of stable and radioactiveExpand