Conveners
Island of inversion at N=40
- Martha Liliana Cortes (RIKEN)
Shell model calculations constitute a very powerful tool to predict with very good accuracy some experimental observables. However, when treating collective behavior, the large number of nucleons involved in the structure of the nuclear states and the size of the valence space may preclude these calculations because of the large matrices to be diagonalized.
The development of islands of...
Shell evolution for the N=40 isotones has recently attracted considerable attention. In a single-particle shell model N=40, which corresponds to the filling of the $fp$ neutron shells, is predicted to be a sub-shell closure. However, measurements of the first 2$^+$ states in $^{64}$Cr and $^{66}$Fe give evidence of a rapid weakening of the N=40 gap when removing protons from the $f_{7/2}$...
I will report on the first γ-ray spectroscopy of $^{51,53}$K produced from $^{52,54}$Ca(p,2p) reactions at ~250 MeV/nucleon at RIBF at RIKEN. The 1/2$_{1}^{+}$ →3/2$_{1}^{+}$ transitions in $^{51,53}$K were clearly observed [1], providing important information to understand the monopole drift effect of the proton 1d$_{3/2}$ and 2s$_{1/2}$ orbitals along the odd-K isotopic chain. Thanks to the...
We look back on the first ever SEASTAR campaign at RIBF, in 2014, using the DALI 2 γ-ray detector array and the MINOS device, and more especially focus on the measurement of the first $2^+$ and $4^+$ states of $^{66}$Cr and $^{70,72}$Fe via in-beam γ-ray spectroscopy after a (p,2p) knockout reaction. Experimental results and their interpretation within the shell model showed an extension of...
In this presentation, we will discuss two publications that explore the low-lying level structures of V63, V59, and V61 nuclei. In the first study, the level structure of V63 was investigated using inelastic proton scattering and proton knock-out reactions in inverse kinematics. Comparing the observed γ-ray transitions with shell-model calculations, two excited states corresponding to the...
