Abstract.
Gas-phase chromatography studies of nihonium (Nh, \(Z=113\)) were carried out at the one-atom-at-a-time level. For the production of nihonium, the heavy-ion-induced nuclear fusion reaction of 48Ca with 243Am was used. This leads to isotopes 284,285Nh, as the direct descendants of the \(\alpha\)-decaying precursors 288,289Mc. Combining the Dubna Gas-Filled Recoil Separator with gas-phase chromatographic separation, the experiment was sensitive to elemental nihonium and its adsorption behavior on Teflon, theoretically predicted by modern relativistic density functional theory. The non-observation of any decays of Nh after the chemical separation indicates a larger than expected retention of elemental Nh on a Teflon surface.
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Communicated by H. Ströher
In memoriam Prof. Walter Greiner (1935-2016) --our good friend and always active supporter of superheavy element research.
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Aksenov, N.V., Steinegger, P., Abdullin, F.S. et al. On the volatility of nihonium (Nh, Z = 113). Eur. Phys. J. A 53, 158 (2017). https://doi.org/10.1140/epja/i2017-12348-8
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DOI: https://doi.org/10.1140/epja/i2017-12348-8