The Neutron-Rich Edge of the Nuclear Landscape. Experiment and Theory

Abstract

In this review, we describe the experimental facilities and methods which make it possible to produce and measure the properties of the extreme neutron rich nuclei. We then develop the theoretical framework that will accompany us along the review; the shell-model approach with large scale configuration interaction (mixing) SM-CI, with special emphasis in the competition between the spherical mean field and the nuclear correlations (mainly pairing and quadrupole-quadrupole). The symmetry properties of the latter are treated in detail as they will show to be of great heuristic value. We explore in detail the Islands of Inversion (IoI) at N=20 and N=28. We make a side excursion into the heavier Calcium and Potassium isotopes, to discuss current issues on shell evolution and new magic numbers far from stability. We visit the N=40 Island of Inversion. We discuss the doubly magic nucleus 78Ni, its shape coexistence and the prospect of a new IoI at N=50 below Z=28. We examine the N=70 and N=82 neutron closures approaching the neutron drip line.

References in corpus (30)

• Chiral effective field theory and nuclear forces
• Nuclear magic numbers: new features far from stability
• Collapse of the N=28 shell closure in ${}^{42}$Si
• Evolution of shell structure in neutron-rich calcium isotopes
• A nucleus-dependent valence-space approach to nuclear structure
• Current Status of r-Process Nucleosynthesis
• Shell-model calculations and realistic effective interactions
• ${}^{78}$Ni revealed as a doubly magic stronghold against nuclear deformation
• Evolution of the N=50 shell gap energy towards ${}^{78}$Ni
• Charge radii of exotic potassium isotopes challenge nuclear theory and the magic character of $N=32$
• Separated Oscillatory Fields for High-Precision Penning Trap Mass Spectrometry
• All the Fun of the FAIR: Fundamental physics at the Facility for Antiproton and Ion Research
• Observation of isotonic symmetry for enhanced quadrupole collectivity in neutron-rich 62,64,66Fe isotopes at N=40
• Spectroscopy of 32Ne and the Island of Inversion
• Evidence for a change in the nuclear mass surface with the discovery of the most neutron-rich nuclei with 17<Z <25
• Unveiling the intruder deformed 0${}_2^{+}$ state in ${}^{34}$Si
• Shell structure at N=28 near the dripline: spectroscopy of ${}^{42}$Si, ${}^{43}$P and ${}^{44}$S
• Shell evolution of $N=40$ isotones towards ${}^{60}$Ca: First spectroscopy of ${}^{62}$Ti
• Discovery of a new isomeric state in ${}^{68}$Ni: Evidence for a highly-deformed proton intruder state
• Coulomb excitation of ${}^{68}$Ni at safe energies
• Shell model based deformation analysis of light Cadmium isotopes
• Production of spin-controlled rare isotope beams
• Exploring the "Island of Inversion" by in-beam gamma-ray spectroscopy of the neutron-rich sodium isotopes 31,32,33Na
• Is the structure of 42Si understood?
• Nuclear deformation at finite temperature
• Core swelling in spherical nuclei: An indication of the saturation of nuclear density
• The structure of 70Fe: Single-particle and collective degrees of freedom
• Nuclear deformation in the laboratory frame
• First spectroscopy of 61Ti and the transition to the Island of Inversion at N = 40
• The Structure of ${}^{33}$Si and the magicity of the N=20 gap at Z=14

Cited by in corpus (27)

• Laser Spectroscopy for the Study of Exotic Nuclei
• First study of the two-body scattering involving charm hadrons
• Multiscale physics of atomic nuclei from first principles
• Summit of the N=40 Island of Inversion: precision mass measurements and ab initio calculations of neutron-rich chromium isotopes
• First Evidence of Axial Shape Asymmetry and Configuration Coexistence in ${}^{74}$Zn: Suggestion for a Northern Extension of the $N=40$ Island of Inversion
• Ab initio computations from ${}^{78}$Ni towards ${}^{70}$Ca along neutron number $N=50$
• Further evidence for shape coexistence in ${}^{79}$Zn${}^m$ near doubly-magic ${}^{78}$Ni
• STRASSE: A Silicon Tracker for Quasi-free Scattering Measurements at the RIBF
• The optimized point-coupling interaction for the relativistic energy density functional of Hartree-Bogoliubov approach quantifying the nuclear bulk properties
• Prediction of two-neutron halos in the $N=28$ isotones ${}^{40}$Mg and ${}^{39}$Na
• Structure of odd-mass Ne, Na, and Mg nuclei
• In-beam $\gamma$-ray spectroscopy of ${}^{32}$Mg via direct reactions
• Configuration interaction relativistic Hartree-Fock model
• New isomeric transition in ${}^{36}$Mg: Bridging the N=20 and N=28 islands of inversion
• Experimental Study of the ${}^{\text{38}}$S Excited Level Scheme
• Partial conservation of seniority in semi-magic nuclei
• Neutron-rich nuclei and neutron skins from chiral low-resolution interactions
• Two-cluster approach to the properties of one- and two-neutron-halo nuclei
• Spectroscopy of ${}^{52}$K
• From closed shells to open shells: Coupled-cluster calculations of atomic nuclei
• $\beta$-delayed spectroscopy of ${}^{80}$Ge${}_{48}$ and competition between Gamow-Teller and first-forbidden transitions in ${}^{80g+m}$Ga${}_{49}$ $\beta$ decay
• Exact solutions of the nuclear shell-model secular problem: Discrete Non-Orthogonal Shell Model within a Variation After Projection approach
• Fast rotation of nuclei with extreme isospin in the vicinity of neutron and proton drip lines
• Discrete non-orthogonal shell model for nuclear structure: Towards heavy elements
• Large scale shell model calculation for collectivity in nuclei beyond 78Ni
• Coexisting normal and intruder configurations in ${}^{32}$Mg
• Towards shell model interactions with credible uncertainties