Ab initio single-neutron spectroscopic overlaps in lithium isotopes

0579696 - ÚJF 2024 RIV US eng J - Journal Article
Sargsyan, G. H. - Launey, K. D. - Shaffer, R. M. - Dudeck, N. - Mercenne, A. - Dytrych, Tomáš - Draayer, J. P.
Ab initio single-neutron spectroscopic overlaps in lithium isotopes.
Physical Review C. Roč. 108, č. 5 (2023), č. článku 054303. ISSN 2469-9985. E-ISSN 2469-9993
R&D Projects: GA ČR(CZ) GA22-14497S
Institutional support: RVO:61389005
Keywords : ab initio * shell model * neutron-nucleus asymptotic
OECD category: Nuclear physics
Impact factor: 3.1, year: 2022
Method of publishing: Limited access
https://doi.org/10.1103/PhysRevC.108.054303

We calculate single-neutron spectroscopic overlaps for lithium isotopes in the framework of the 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 crosssection calculations. While spectroscopic factors have been traditionally extracted from experimental cross sections, their sensitivity on the type of reactions, the energy, and the underlying models point to the need for determining SFs from first-principle structure considerations. As illustrative examples, we present 6Li +n, 7Li+n, and 8Li +n, and we show that the results are in a good agreement with those of other 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 intercluster effective interactions for input into analyses of existing and future experimental data.
Permanent Link: https://hdl.handle.net/11104/0348502