Ab initio single-neutron spectroscopic overlaps in lithium isotopes

Abstract

We calculate single-neutron spectroscopic overlaps for lithium isotopes in the framework of the \textit{ab initio} symmetry-adapted no-core shell model. We report the associated neutron-nucleus asymptotic normalization coefficients (ANCs) and spectroscopic factors (SFs) that are important ingredients in many reaction cross section calculations. While spectroscopic factors have been traditionally extracted from experimental cross sections, their sensitivity on the type of reactions, energy, and the underlying models point to the need for determining SF from first-principle structure considerations. As illustrative examples, we present ${}^6$Li+n, ${}^7$Li+n, and ${}^8$Li+n, and we show that the results are in a good agreement with those of other \textit{ab initio} methods, where available, including the quantum Monte Carlo approach. We compare ANCs and SFs to available experimentally deduced values, with a view toward expanding this study to heavier nuclei and to extracting inter-cluster effective interactions for input into analyses of existing and future experimental data.

10 pages, 8 figures

References in corpus (12)

• Ab initio no-core full configuration calculations of light nuclei
• Symmetry-guided large-scale shell-model theory
• Quenching of single-particle strength from direct reactions with stable and rare-isotope beams
• Optical potential from first principles
• Asymptotic normalization coefficients from ab initio calculations
• Nuclear Dynamics and Reactions in the Ab Initio Symmetry-Adapted Framework
• Microscopic positive-energy potential based on Gogny interaction
• The 8Li(d,p)9Li Reaction and the Astrophysical 8Li(n,g)9Li Reaction Rate
• Ab initio Leading Order Effective Potentials for Elastic Nucleon-Nucleus Scattering
• Electron-scattering form factors for 6Li in the ab initio symmetry-guided framework
• Efficacy of the symmetry-adapted basis for ab initio nucleon-nucleus interactions for light- and intermediate-mass nuclei
• Neutron-deuteron scattering cross-sections with chiral $NN$ interactions using wave-packet continuum discretization

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