CGS17

I will start the talk with some thoughts on our current theoretical understanding of the structure of the nucleus, avoiding as much as possible technical details and concentrating on recent advances and broad aims. Despite the recent trend to view the nucleus from a computationally intensive angle, I will argue that this can only provide a partial picture and that parametrised models will...

Assuming the presence of one- and two-body interactions, single-j calculations for $(j)^n$ configurations with n = 1,..,2j+1 can be performed using a semi-empirical approach, provided that the energies and absolute electromagnetic transition rates are known for the two-particle (hole) nucleus. Using those and the coefficients of fractional parentage, all needed matrix elements for the $(j)^n$...

Many of deformed heavy nuclei, such as 166Er and their neighbors in the nuclear chart, are shown to have triaxial ground and gamma bands with gamma equal to about 10 degrees, with gamma stretching in the gamma bands.
Some other nuclei, like 154Sm, show prolate ground bands, but their side bands are produced by the shape coexistence of triaxial shapes with gamma equal to about 15...

Many of deformed heavy nuclei, such as 166Er and
their neighbors in the nuclear chart, are shown to have
triaxial ground and gamma bands with gamma equal to about
10 degrees, with gamma stretching in the gamma bands.
Some other nuclei, like 154Sm, show prolate ground bands,
but their side bands are produced by the shape coexistence of
triaxial shapes with gamma equal to about 15...