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1.	Khuyagbaatar, J., et al. (författare) Search for elements 119 and 120 2020 Ingår i: Physical Review C. - 2469-9985. ; 102:6 Tidskriftsartikel (refereegranskat)abstract A search for production of the superheavy elements with atomic numbers 119 and 120 was performed in the 50Ti+249Bk and 50Ti+249Cf fusion-evaporation reactions, respectively, at the gas-filled recoil separator TASCA at GSI Darmstadt, Germany. Over four months of irradiation, the 249Bk target partially decayed into 249Cf, which allowed for a simultaneous search for both elements. Neither was detected at cross-section sensitivity levels of 65 and 200 fb for the 50Ti+249Bk and 50Ti+249Cf reactions, respectively, at a midtarget beam energy of Elab = 281.5 MeV. The nonobservation of elements 119 and 120 is discussed within the concept of fusion-evaporation reactions including various theoretical predictions on the fission-barrier heights of superheavy nuclei in the region of the island of stability.
2.	Yakushev, A., et al. (författare) On the adsorption and reactivity of element 114, flerovium 2022 Ingår i: Frontiers in Chemistry. - : Frontiers Media SA. - 2296-2646. ; 10 Tidskriftsartikel (refereegranskat)abstract Flerovium (Fl, element 114) is the heaviest element chemically studied so far. To date, its interaction with gold was investigated in two gas-solid chromatography experiments, which reported two different types of interaction, however, each based on the level of a few registered atoms only. Whereas noble-gas-like properties were suggested from the first experiment, the second one pointed at a volatile-metal-like character. Here, we present further experimental data on adsorption studies of Fl on silicon oxide and gold surfaces, accounting for the inhomogeneous nature of the surface, as it was used in the experiment and analyzed as part of the reported studies. We confirm that Fl is highly volatile and the least reactive member of group 14. Our experimental observations suggest that Fl exhibits lower reactivity towards Au than the volatile metal Hg, but higher reactivity than the noble gas Rn.

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Typ av publikation: tidskriftsartikel (2)

Typ av innehåll: refereegranskat (2)

Författare/redaktör: Asai, M. (2); Golubev, P. (2); Kurz, N (2); Papadakis, P. (2); Uusitalo, J. (2); Lahiri, S (2); visa fler...; Rudolph, D. (2); Kratz, J. V. (2); Herzberg, R-D (2); Eberhardt, K. (2); Khuyagbaatar, J. (2); Krier, J. (2); Schausten, B. (2); Yakushev, A. (2); Lommel, B. (2); Kindler, B. (2); Steiner, J. (2); Heßberger, F. P. (2); Di Nitto, A. (2); Block, M (2); Mistry, A. K. (2); Maiti, M. (2); Komori, Y. (1); Williams, E. (1); Dasgupta, M. (1); Judson, D. (1); Lang, R (1); Hartmann, W (1); Cox, D. M. (1); Konki, J. (1); Hoffmann, J (1); Andersson, L-L (1); Ackermann, D. (1); Even, J. (1); Semchenkov, A. (1); Nitsche, H. (1); Sarmiento, L. G. (1); Tsukada, K. (1); Fahlander, C. (1); Sarmiento Pico, Luis (1); Brand, H (1); Götz, M. (1); Götz, S. (1); Pershina, V. (1); Renisch, D. (1); Ward, A. (1); Lens, L. (1); Minami, S (1); Albers, H. M. (1); Tinschert, K. (1); visa färre...

Lärosäte: Lunds universitet (2)

Språk: Engelska (2)

Forskningsämne (UKÄ/SCB): Naturvetenskap (2)

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