Over the decades, there have been many attempt to identify the single-neutron excitations outside of $^{132}$Sn, with beta decay being a common approach. ISOLDE played a key role in identifying a subset of these states in the 90s [1]. A measurement of the $^{132}$Sn($d$,$p$) reaction, the ideal tool to probe these single-particle excitations, has been considered a flagship measurement, often...
The Sn isotopic chain is a formidable testing ground for the study of shell evolution in various kinds of nuclear models. Even though the first 2$^{+}$ energies in even-even isotopes between $^{102}$Sn and $^{130}$Sn are quite similar, in agreement with the seniority scheme for this valence neutron space, the significant increment of the B(E2: 0$^{+} \rightarrow 2^{+}$) approaching $^{100}$Sn...
G. de Angelis1, K. Kaneko2, A. Gottardo1, F. Recchia3, J. Valiente Dobon1, C. Domingo Pardo4, R.D. Page4, A. Gottardo1, , D. Mengoni3, B. Rubio4, A. Gargano6, S.J. Freeman7, D.K. Sharp7, I.H. Lazarus7, P. Morrall7, A. Grant7, J. Thornhill4, D.R. Wells4, L.P. Gaffney4, C. Everett4, K. Green5, C. Unsworth8, M. Kogimtzis8, I. Burrows8, M. Cordwell8, ISS collaboration
1 INFN-LNL, Legnaro, ...
Information gained on neutron-rich N~126 nuclei is essential for the understanding of nuclear structure in heavy nuclei. Studies around doubly magic systems allow direct tests of the purity of shell model wave functions. From a longer-term perspective, experiments in this region pave the way toward the understanding of the nuclear-astrophysical r-process waiting point nuclei along the N = 126...
The exotic, two-neutron halo nucleus $^{11}$Li has proven to be an extraordinarily fruitful laboratory for the study of the nuclear many-body system under very low density conditions. The halo, consisting of the two valence neutrons outside the $^{9}$Li core, form a thin mist of nuclear matter, held together by a subtle mix of the bare NN-interaction and the induced interaction arising from...
Pairing correlations play a crucial role in defining the properties of atomic nuclei. The evolution of these correlations in exotic nuclei is a subject which has received much attention in recent years, as new accelerator facilities are providing unique radioactive beams for study. Of particular interest is the role of pairing in neutron-rich isotopes. In particular in the proton-magic Sn...
The strength of p-n interaction between various orbitals gives an important information to understand the nuclear system [1]. With an intense 133Sb beam of ~5×10^5 pps produced by the HIE-ISOLDE, the p-n interaction near 133Sb can be probed via the (d,p) and (d,t) reactions. We will discuss the feasibility of these reactions such as the yield, the Q-value resolutions, and experimental...
We wish to exploit the superior resolution allowed by the ISS to study the structure of the isotopes $^{79}$Zn and $^{80}$Zn correlating excitation energy and gamma decay in (d,p) and inelastic scattering reactions on CD$_2$ and C target.
The ideal nuclear picture derived from the shell model considers the nucleus as composed of defined nuclear states fully occupied by nucleons. However in a real nucleus correlation effects [1] lead to the mixing of configurations, reducing the occupancies as the Fermi energy is reached. For stable nuclei the (e,e’p) data reveals a quenching factor a round ~ 0.7 with respect to the...
We propose to study the $^{61}$Zn($d,p$)$^{62}$Zn reaction in inverse kinematics for the first time, using the ISOL Solenoidal Spectrometer currently being installed at ISOLDE. This measurement represents the mirror analog of the astrophysically important $^{61}$Ga($p$,$\gamma$)$^{62}$Ge process (a reaction that cannot be presently studied with conventional means) and will allow for the first...
G. de Angelis1, C. Domingo Pardo2, F. Recchia3, R.D. Page4, A. Gottardo1, J. Valiente Dobon1, D. Mengoni3, B. Rubio2, A. Gargano5, S.J. Freeman6, D.K. Sharp6, I.H. Lazarus7, P. Morrall7, A. Grant7, J. Thornhill4, D.R. Wells4, L.P. Gaffney4, C. Everett4, K. Green4, C. Unsworth7, M. Kogimtzis7, I. Burrows7, M. Cordwell7, ISS collaboration
1 INFN-LNL, Legnaro, Italy
2 IFIC-Valencia,...
The isotope $^{60}$Fe contributes substantially to the Galactic $\gamma$-radioactivity measured with satellite-based instruments and it is characterized by a diffuse distribution along the galactic plane.
Numerous studies focused on the nucleosynthesis $^{60}$Fe/$^{26}$Al ratio.
A significant contribution to the interstellar $^{60}$Fe abundance is provided by the s-process during...
The question of np pairing in N=Z nuclei remains a subject of much interest in the nuclear structure community [1]. While clearly T=1 np pairing exists on an equal footing with T=1 nn and pp pairing, it is still an open question if the T=0 part of the force gives rise to collective pairing effects.
Two-nucleon transfer reactions such as (t,p) and (p,t) reactions provided a unique tool to...
A quantitative description of the interplay between the $p$-, $s$- and $d$-shell configurations in $^{12}$Be still alludes us despite numerous attempts via direct and indirect reactions. To resolve this situation we would like to explore the possibility of a study of the $^{11}$Be($d$,$p$)$^{12}$Be reaction at a beam energy of around 10 MeV/u, using the ISS to achieve the necessary 100-keV...
