Présidents de session
Session 17: Various topics 3
- Zhipan Li (Southwest University, Chongqing, China)
The Relativistic Configuration-interaction Density functional (ReCD) theory that combines the advantages of large-scale configuration-interaction shell model and relativistic density functional theory is extended to study nuclear chiral rotation. The energy spectra and transition probabilities of the chiral doublet bands are reproduced satisfactorily without any free parameters. By analyzing...
Shape coexistence is a very important phenomenon that takes place in several regions of the nuclear chart. Among these regions, the isotopic chain of Krypton has been the subject of several experimental investigations and thus it can be considered as an excellent candidate to test the systematic behaviours of theoretical models. [1]
By going from the neutron deficient to more neutron rich Kr...
The semi-magic $^{120}_{50}$Sn$_{70}$ lies in the neutron mid-shell among the other stable Sn isotopes, where shape coexistence was observed with the signature of deformed bands built on excited $0^+$ states intruding into the yrast band that is built on the spherical ground state. However, the lifetime of the excited $0^+_3$ only has a lower limit of 6 ps in the literature, which prevents the...
We study the shape coexistence in the nucleus $^{28}$Si with the nuclear shell model using numerical diagonalizations complemented with variational calculations based on the projected generator-coordinate method. The theoretical electric quadrupole moments and transitions as well as the collective wavefunctions indicate that the standard USDB interaction in the $sd$ shell describes well the...
The tungsten isotopes 165W and 169W have been studied by using fusion-evaporation reactions $^{92}$Mo($^{78}$Kr,4p1n)$^{165}$W and $^{92}$Mo($^{84}$Kr,1α2p1n)$^{169}$W at the Accelerator laboratory of the University of Jyväskylä, Finland. Beam energies of 380 and 402 MeV were used for the $^{165}$W and $^{169}$W experiments, respectively. The vacuum-mode separator MARA [1], the JUROGAM 3...
Recently, high-energy nuclear collisions have been proposed as a powerful tool to image the global structure of heavy atomic nuclei, such as their shapes and radial profiles. We present the first quantitative demonstration of this method by extracting the quadruple deformation and triaxiality for the U238 nucleus known for its large prolate shape. We achieve this by comparing several flow...
