Halos and related structures

Abstract

The halo structure originated in nuclear physics but is now encountered more widely. It appears in loosely bound, clustered systems where the spatial extension of the system is significantly larger than that of the binding potentials. A review is given on our current understanding of these structures, with an emphasis on how the structures evolve as more cluster components are added, and on the experimental situation concerning halo states in light nuclei.

27 pages, 3 figures, Contribution to Nobel Symposium 152 "Physics With Radioactive Beams"

References in corpus (36)

• Radioactive decays at limits of nuclear stability
• Fusion and Direct Reactions of Halo Nuclei at Energies around the Coulomb Barrier
• Nuclear Charge Radius of Li-9, Li-11: Halo Neutron: the influence of Halo Neutrons
• Nuclear Charge Radii of Be-7,9,10 and the one-neutron halo nucleus Be-11
• Coulomb and nuclear breakup of a halo nucleus 11Be
• Nuclear charge radius of ${}^8$He
• Precision Atomic Physics Techniques for Nuclear Physics with Radioactive Beams
• Matter radii of light halo nuclei
• One-neutron removal reactions on neutron-rich psd-shell nuclei
• Measurement of two-halo neutron transfer reaction p(${}^{11}$Li,${}^9$Li)t at 3$A$ MeV
• Neutron density distributions from antiprotonic 208Pb and 209Bi atoms
• Efimov Resonances in Ultracold Quantum Gases
• The structure of the atomic helium trimers: Halos and Efimov states
• Deformed nuclear halos
• Halo nucleus Be-11: A spectroscopic study via neutron transfer
• Association of Efimov trimers from a three-atom continuum
• Matter Wave Diffraction from an Inclined Transmission Grating: Searching for the Elusive He-4 Trimer Efimov State
• Electromagnetic strength of neutron and proton single-particle halo nuclei
• Precision Measurement of 11Li moments: Influence of Halo Neutrons on the 9Li Core
• Evidence for 6ΛH
• Analysis of the 16O(p,gamma)17F capture reaction using the shell model embedded in the continuum
• Living on the edge of stability, the limits of the nuclear landscape
• Effective-range approach and scaling laws for electromagnetic strength in neutron-halo nuclei
• Comparing non-perturbative models of the breakup of neutron-halo nuclei
• New analysis method of the halo phenomenon in finite many-fermion systems. First applications to medium-mass atomic nuclei
• Nuclear Halos and Drip Lines in Symmetry-Conserving Continuum HFB Theory
• The simplest ``strange'' three-body halo
• Halo phenomenon in finite many-fermion systems. Atom-positron complexes and large-scale study of atomic nuclei
• Beta-delayed deuteron emission from 11Li: decay of the halo
• First-forbidden mirror beta-decays in A=17 mass region
• One-neutron halo structure by the ratio method
• Isomeric 0- halo-states in 12Be and 11Li
• Classification of three-body quantum halos
• Nuclear alpha-particle condensates: Definitions, occurrence conditions, and consequences
• Structure of exotic three-body systems
• Reaction mechanisms for two-neutron halo breakup

Cited by in corpus (40)

• Halos in medium-heavy and heavy nuclei with covariant density functional theory in continuum
• Effective field theory description of halo nuclei
• Shrunk halo and quenched shell gap at $N=16$ in ${}^{22}$C: Inversion of $sd$ states and deformation effects
• Quasi-free Neutron Knockout Reaction Reveals a Small $s$-orbital Component in the Borromean Nucleus ${}^{17}$B
• Study of ground state properties of carbon isotopes with deformed relativistic Hartree-Bogoliubov theory in continuum
• Effective field theory for proton halo nuclei
• 11Be(beta-p), a quasi-free neutron decay?
• Efimov Physics around the neutron rich Calcium-60 isotope
• On the possibility to observe neutron dark decay in nuclei
• Angular momentum projection in the deformed relativistic Hartree-Bogoliubov theory in continuum
• Dissecting reaction calculations using Halo EFT and ab initio input
• Study of bound states in 12Be through low-energy 11Be(d,p)-transfer reactions
• ${}^{15}$C: from Halo-EFT structure to the study of transfer, breakup and radiative-capture reactions
• Universality in molecular halo clusters
• Clarification of large-strength transitions in the beta decay of 11Be
• Benchmark neutrinoless double-beta decay matrix elements in a light nucleus
• $\beta$-delayed proton emission from ${}^{11}$Be in effective field theory
• Occurrence conditions for two-dimensional Borromean systems
• Systematic investigation of projectile fragmentation using beams of unstable B and C isotopes
• Scaling of the ${}^{19}$B two-neutron halo properties close to unitarity
• Weakly bound Li He${}_2$ molecules
• A multi-reflection time-of-flight mass spectrometer for the offline ion source of the PUMA experiment
• Weak binding effects on the structure of ${}^{40}$Mg
• Electric structure of shallow D-wave states in Halo EFT
• Halo structure of ${}^{17}$C
• Combined few-body and mean-field model for nuclei
• Excited-state one-neutron halo nuclei within a parallel momentum distribution analysis
• Borromean structures in medium-heavy nuclei
• Combining few-body cluster structures with many-body mean-field methods
• Final-state interactions and spin structure in $E1$ breakup of ${}^{1}1$Li in Halo EFT
• Investigating the rate of ${}^{10}$Be(n,$\gamma$)${}^{11}$Be radiative capture reaction within the FRDWBA framework
• Halo structure of ${}^6$He from $\text{ab initio}$ two-nucleon spatial correlations
• Dineutron clusters in ${}^7$He and ${}^8$He structure
• Commissioning and Full Realization of the PLASEN System at BRIF
• Van der Waals five-body size-energy universality
• Scaling limit analysis of Borromean halos
• Universality in the neutron${-}^{19}$C scattering using finite range separable interactions
• Quantum halo states in two-dimensional dipolar clusters
• Three-body calculations of beta decay applied to ${}^{11}$Li
• Halo EFT for ${}^{31}$Ne in a spherical formalism