Halo nucleus Be-11: A spectroscopic study via neutron transfer

Abstract

The best examples of halo nuclei, exotic systems with a diffuse nuclear cloud surrounding a tightly-bound core, are found in the light, neutron-rich region, where the halo neutrons experience only weak binding and a weak, or no, potential barrier. Modern direct reaction measurement techniques provide powerful probes of the structure of exotic nuclei. Despite more than four decades of these studies on the benchmark one-neutron halo nucleus Be-11, the spectroscopic factors for the two bound states remain poorly constrained. In the present work, the Be-10(d,p) reaction has been used in inverse kinematics at four beam energies to study the structure of Be-11. The spectroscopic factors extracted using the adiabatic model, were found to be consistent across the four measurements, and were largely insensitive to the optical potential used. The extracted spectroscopic factor for a neutron in a nlj = 2s1/2 state coupled to the ground state of Be-10 is 0.71(5). For the first excited state at 0.32 MeV, a spectroscopic factor of 0.62(4) is found for the halo neutron in a 1p1/2 state.

5 pages, 4 figures

References in corpus (8)

• Matter radii of light halo nuclei
• A consistent analysis of (e,e'p) and (d,3He) experiments
• Large basis ab initio shell model investigation of 9-Be and 11-Be
• Single-neutron transfer from 11Be gs via the (p,d) reaction with a radioactive beam
• Adiabatic versus Faddeev for (d,p) and (p,d) reactions
• Deuteron stripping and pickup involving halo nuclei 11Be and 15C
• Finite-range effects in (d,p) reactions
• Nuclear break-up of 11Be

Cited by in corpus (37)

• Effective field theory description of halo nuclei
• Quenching of single-particle strength from direct reactions with stable and rare-isotope beams
• Halos and related structures
• From bound states to the continuum
• Faddeev-type calculation of three-body nuclear reactions including core excitation
• 11Be(beta-p), a quasi-free neutron decay?
• Explicit inclusion of nonlocality in (d,p) transfer reactions
• A New Measurement of the Intruder Configuration in 12Be
• Reactions of a Be-10 beam on proton and deuteron targets
• Transfer reaction code with nonlocal interactions
• Study of bound states in 12Be through low-energy 11Be(d,p)-transfer reactions
• Systematic analysis of the peripherality of the ${}^{10}$Be$(d,p)$${}^{11}$Be transfer reaction and extraction of the asymptotic normalization coefficient of ${}^{11}$Be bound states
• Experimental study of intruder components in light neutron-rich nuclei via single-nucleon transfer reaction
• Role of core excitation in (d,p) transfer reactions
• Separable Representation of Phenomenological Optical Potentials of Woods-Saxon Type
• Observation of the near-threshold intruder $0^{-}$ resonance in ${}^{12}$Be
• Halo effective field theory analysis of one-neutron knockout reactions of ${}^{11}\mathrm{Be}$ and ${}^{15}\mathrm{C}$
• Core excitation in three-body nuclear reactions: Improved nucleon-core potential
• Analysis of Spectroscopic Factors in 11Be and 12Be in the Nilsson Strong Coupling Limit
• The ratio method: a new tool to study one-neutron halo nuclei
• Transfer reaction experiments with radioactive beams: from halos to the r-process
• Sensitivity of one-neutron knockout to the nuclear structure of halo nuclei
• ${}^6$Li in a Three-Body Model with Realistic Forces: Separable vs. Non-separable Approach
• Neutron disappearance inside the nucleus
• Unified mechanism behind the even-parity ground state and neutron halo of ${}^{11}$Be
• Faddeev-type calculation of (d,n) transfer reactions in three-body nuclear systems
• Sensitivity of transfer cross sections to the bound-state wave functions
• Combining Halo-EFT descriptions of nuclei and precise models of nuclear reactions
• Extension of the ratio method to low energy
• Separable Representation of Multichannel Nucleon-Nucleus Optical Potentials
• Neutron transfer reactions in halo effective field theory
• Study of Cluster Structures in Nuclei through the Ratio Method. A Tribute to Mahir Hussein
• Ab initio study of the halo structure in ${}^{11}$Be
• Effects of Nonlocality on Transfer Reactions
• Separable Potentials for (d,p) Reaction Calculations
• Reactions with a 10Be beam to study the one-neutron halo nucleus 11Be
• First experimental test of the ratio method for nuclear-reaction analysis