Speaker
Dr
Houda NAIDJA
(Université Constantine 1)
Description
The mass region above $^{132}$Sn inert closed core represents an interesting area for experimental and theoretical nuclear structure research. In our earlier shell-model works, we have calculated the energy levels, the isomeric transitions and the masses of $^{134,136,138,140}$Sn. We have progressed in our investigation of this region by describing the low-lying spectra, E2 and M1 transition strengths of even-even chain of nuclei with $52\le Z \le 60$ and $82\le N \le 86$ using an effective interaction based on the N3LO portential (named N3LOP). We focus in the discussion on the collectivity in the $N=86$ isotones, where the quadrupole properties sign the presence of triaxial $\gamma$ bands.
Primary author
Dr
Houda NAIDJA
(Université Constantine 1)
