Structure of 12Be: intruder d-wave strength at N=8

Abstract

The breaking of the N=8 shell-model magic number in the 12Be ground state has been determined to include significant occupancy of the intruder d-wave orbital. This is in marked contrast with all other N=8 isotones, both more and less exotic than 12Be. The occupancies of the 0 hbar omega neutron p1/2-orbital and the 1 hbar omega, neutron d5/2 intruder orbital were deduced from a measurement of neutron removal from a high-energy 12Be beam leading to bound and unbound states in 11Be.

5 pages, 2 figures

References in corpus (5)

• Coulomb and nuclear breakup of a halo nucleus 11Be
• Cluster Structures of the Ground and Excited States of 12Be Studied with Antisymmetrized Molecular Dynamics
• Momentum distributions in stripping reactions of radioactive projectiles at intermediate energies
• Structure of unstable light nuclei
• Two-body correlations in N=8 and 10 nuclei and effective neutron-neutron interactions in Tamm-Dancoff and two-particle RPA models

Cited by in corpus (30)

• Nuclear magic numbers: new features far from stability
• Microscopic Clustering in Light Nuclei
• Antisymmetrized molecular dynamics studies for exotic clustering phenomena in neutron-rich nuclei
• Emergence of rotational bands in ab initio no-core configuration interaction calculations of the Be isotopes
• 10He low-lying states structure uncovered by correlations
• Three-body structure of low-lying 12Be states
• A New Measurement of the Intruder Configuration in 12Be
• Structure of ${}^{13}$Be probed via secondary beam reactions
• Proton radii of Be, B, and C isotopes
• Breaking of N=8 magicity in 13Be
• Study of bound states in 12Be through low-energy 11Be(d,p)-transfer reactions
• Properties of 12Be and 11Be in terms of single-particle motion in deformed potential
• Experimental study of intruder components in light neutron-rich nuclei via single-nucleon transfer reaction
• Ab initio study of the beryllium isotopes ${}^7$Be to ${}^{12}$Be
• Structure of 13Be probed via quasi-free scattering
• B(E1) Strengths from Coulomb Excitation of 11Be
• Reconstruction of nuclear charged fragment trajectories from a large gap sweeper magnet
• Double-magicity of proton drip-line nucleus ${}^{22}$Si with \textit{ab initio} calculation
• Observation of the near-threshold intruder $0^{-}$ resonance in ${}^{12}$Be
• Single-neutron knockout from ${}^{20}\text{C}$ and the structure of ${}^{19}\text{C}$
• Isomeric 0- halo-states in 12Be and 11Li
• Analysis of Spectroscopic Factors in 11Be and 12Be in the Nilsson Strong Coupling Limit
• Study of the nucleon radiative captures 8Li(n,gamma)9Li, 9Be(p,gamma)10B, 10Be(n,gamma)11Be, 10B(p,gamma)11C, and 16O(p,gamma)17F at thermal and astrophysical energies
• Neutron knockout of 12Be populating neutron-unbound states in 11Be
• Microscopic calculation of inelastic proton scattering off ${}^{18}$O, ${}^{10}$Be, ${}^{12}$Be, and ${}^{16}$C for study of neutron excitation in neutron-rich nuclei
• Accuracy of the mean-field theory in describing ground-state properties of light nuclei
• The radiative 10Be(n,g)11be capture at thermal and astrophysical energies
• The dominance of the $\nu (0d_{5/2}{)}^2$ configuration in the $N=8$ shell in ${}^{12}$Be from the breakup reaction on a proton target at intermediate energy
• Microscopic analysis of quasielastic scattering and breakup reactions of neutron-rich nuclei ${}^{12,14}$Be
• Structure Studies of ${}^{13}\text{Be}$ from the ${}^{12}$Be(d,p) reaction in inverse kinematics on a solid deuteron target