Abstract.
Shell-correction energies of super-heavy nuclei are approximated by using \( Q_{\alpha}\) values of measured decay chains. Five decay chains were analyzed, which start at the isotopes 285Fl, 294118, 291Lv, 292Lv and 293Lv. The data are compared with predictions of macroscopic-microscopic models. Fission barriers are estimated that can be used to eliminate uncertainties in partial fission half-lives and in calculations of evaporation-residue cross-sections. In that calculations, fission probability of the compound nucleus is a major factor contributing to the total cross-section. The data also provide constraints on the cross-sections of capture and quasi-fission in the entrance channel of the fusion reaction. Arguments are presented that fusion reactions for synthesis of isotopes of elements 118 and 120 may have higher cross-sections than assumed so far.
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Communicated by P. Woods
This paper is dedicated to our colleague and friend Valeriy Zagrebaev who passed away in January 2015
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Hofmann, S., Heinz, S., Mann, R. et al. Remarks on the fission barriers of super-heavy nuclei. Eur. Phys. J. A 52, 116 (2016). https://doi.org/10.1140/epja/i2016-16116-0
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DOI: https://doi.org/10.1140/epja/i2016-16116-0