https://doi.org/10.1140/epja/s10050-024-01415-2
Regular Article - Theoretical Physics
Fission of 
Hg and 
Fm: a comparative study
1
CEA, DES, IRESNE, DER, SPRC, LEPh, 13115, Saint-Paul-lès-Durance, France
2
Department of Fundamental and Theoretical Physics, Research School of Physics, Australian National University, 2601, Canberra, ACT, Australia
3
Department of Nuclear Physics and Accelerator Applications, Research School of Physics, Australian National University, 2601, Canberra, ACT, Australia
4
CEA, DAM, DIF, F-91297, Arpajon, France
5
Université Paris-Saclay, CEA, Laboratoire Matière sous Conditions Extrêmes, 91680, Bruyères-Le-Châtel, France
6
Facility for Rare Isotope Beams, Michigan State University, 48824, East Lansing, USA
Received:
19
June
2024
Accepted:
4
September
2024
Published online:
23
September
2024
Hg is experimentally found to fission asymmetrically. This result was not expected as a naive fragment shell effects study would support the symmetric mode to be the most probable. In the present study we investigate both symmetric and asymmetric Hg fission modes at the mean field level using various multipole moment constraints. Potential energy surfaces are analysed in terms of shell effects that shape their topographies and connections to fragment shell effects are made. The non-occurrence of low energy symmetric fission is interpreted in terms of 
Zr fragment properties. Throughout this study a comparison with Fm and its symmetric doubly magic 
Sn fission fragments is done.
© The Author(s) 2024
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