Search for elements 119 and 120

@article{Khuyagbaatar2020SearchFE,
  title={Search for elements 119 and 120},
  author={J. Khuyagbaatar and A. Yakushev and Christoph Emanuel D{\"u}llmann and D. Ackermann and L-L. Andersson and Masato Asai and Michael Block and Rose A. Boll and Holger Brand and Daniel Cox and Mahananda Dasgupta and X. Derkx and Antonio Di Nitto and Klaus Eberhardt and J. Even and Maurits Evers and C. Fahlander and U. Forsberg and Jacklyn M. Gates and Narek Gharibyan and Pavel Golubev and Kenneth E. Gregorich and J. H. Hamilton and Willi Hartmann and R-D. Herzberg and Fritz Peter Hessberger and D. J. Hinde and Joerg Hoffmann and Ralph Hollinger and Annett H{\"u}bner and Egon J{\"a}ger and B. Kindler and Jens Volker Kratz and J{\"o}rg Krier and Nikolaus Kurz and Mustapha Laatiaoui and Susanta Lahiri and R. Lang and B. Lommel and Moumita Maiti and Krzysztof Miernik and Shizu Minami and Andrew Kishor Mistry and Ch. Mokry and Heino Nitsche and Jon Petter Omtvedt and Gregory K. Pang and Philippos E. Papadakis and D Renisch and James B. Roberto and D. Rudolph and J{\"o}rg Runke and Krzysztof P. Rykaczewski and L. G. Sarmiento and Matthias Sch{\"a}del and B. Schausten and A. G. Semchenkov and Dawn A. Shaughnessy and Patrick Steinegger and J. Steiner and Evgeny E. Tereshatov and Petra Th{\"o}rle-Pospiech and Klaus Tinschert and T. Torres De Heidenreich and Norbert Trautmann and Andreas T{\"u}rler and Juha Uusitalo and Maciej Węgrzecki and Norbert Wiehl and Shelley M. Van Cleve and Vera Yakusheva},
  journal={Physical Review C},
  year={2020}
}
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 separator TASCA at GSI Darmstadt, Germany. Over four months of irradiation, the Bk249 target partially decayed into Cf249, which allowed for a simultaneous search for both elements. Neither was detected at cross-section sensitivity levels of 65 and 200 fb for the Ti50+Bk249 and Ti50+Cf249 reactions… 
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References

SHOWING 1-10 OF 86 REFERENCES

The cross sections of fusion-evaporation reactions: the most promising route to superheavy elements beyond Z=118

The synthesis of superheavy elements beyond oganesson (Og), which has atomic number Z = 118, is currently one of the main topics in nuclear physics. An absence of sufficient amounts of target

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. Three

ERRATUM: The cross sections of fusion-evaporation reactions: the most promising route to superheavy elements beyond Z=118

The synthesis of superheavy elements beyond oganesson (Og), which has atomic number Z = 118, is currently one of the main topics in nuclear physics. An absence of sufficient amounts of target

Synthesis and decay process of superheavy nuclei with Z=119-122 via hot-fusion reactions

Abstract.In this research article attempts have been made to calculate the superheavy-nuclei synthesis characteristics including, the potential energy parameters, fusion probability, fusion and

Study of the reaction 48Ca + 248Cm → 296Lv∗ at RIKEN-GARIS

The fusion reaction 48Ca + 248Cm → 296Lv* was investigated using the gas-filled recoil ion separator GARIS at RIKEN. The reaction was studied at excitation energies of 41.3 and 38.2 MeV. A total of

Fusion reaction Ca48+Bk249 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,

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

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
...