Decay Spectroscopy at the Radioactive Isotope Beam Factory (RIBF) at RIKEN

Sesión

27 mar. 2025 16:15

1001-Primera-1-1-1 - Paterna. Seminario (Universe)

Moderadores

Neutron-Rich Nuclei towards 78Ni

• Andrea Jungclaus (Instituto de Estructura de la Materia)

Lista de contribución Cronograma

17. Shape coexistance in the N=40 Island of Inversion

Dr. Bruno Olaizola Mampaso (IEM - CSIC)

27/3/25 16:15

Islands of Inversion (IoI) are among the most intriguing phenomena in nuclear structure research. One of the least understood is the so-called $N=40$ IoI, centred around $^{64}$Cr ($Z=24$, $N=40$). Situated just below the spherical $^{68}$Ni ($Z=28$, $N=40$), the interplay between the negative-parity $pf$ neutron shell and the positive-parity $g_{9/2}$ and $d_{5/2}$ orbitals (spanning the...

19. Beta-delayed gamma ray spectroscopy N=40-N=50

Dr. Andrea Gottardo (INFN LNL)

27/3/25 16:30

The first spectroscopy of $^{78}$Ni suggested that the nucleus act as separation between a region. of sphericity and an island of deformation developing around N=50 for Z<28. In Fe isotopes, the spectroscopy with in-flight studies reached until $^{72}$Fe and $^{73}$Co (N=46), discovering an extension of the N=40 island of inversion towards the N=50 magic number. Also in $^{69,71}$Co low-lying...

20. Decay spectroscopy around 78Ni

Dr. Shintaro Go (RIKEN)

27/3/25 16:45

Systematic study such as of the level structure and decay half lives in exotic nuclei are important to test the persistence of the shell structure. The EURICA project has deepened the understanding around the 78Ni region with the massive amount of decay data (e.g. [1]). The new gamma-ray spectrometer at RIBF could have a capability to extend the region with its higher gamma-ray detection...

5. Nuclear shell structure of 80Zn: shape coexistence at N = 50

Byul Moon (CENS, IBS)

27/3/25 17:00

$^{78}$Ni is now being understood as a doubly magic nucleus [R. Taniuchi et al., Nature 569, 53 (2019)]. Moreover, from the experimental findings this nucleus may have a deformed excited state, which is strongly related to shape coexistence. Unfortunately, however, it is still extremely difficult to directly investigate not only this $^{78}$Ni but also $^{79}$Ni and $^{79}$Cu for more...

2. Shape coexistence in 60Ti and 64Cr

Byul Moon (CENS, IBS)

27/3/25 17:20

The island of inversion, where the ground and excited states exchange their nuclear deformation, is one of the cornerstones to investigate nuclear shell evolution in nuclei with the extreme neutron-proton ratios. $^{64}$Cr is the key nucleus for this island of inversion at N = 40 with multi particle and multi hole (np-nh) configurations. Recently, the in-beam $\gamma$-ray spectroscopy carried...