Spectroscopy of the T=32 A=47 and A=45 mirror nuclei via one- and two-nucleon knockout reactions

Abstract

Level schemes of the proton-rich nuclei, Mn47 (Z=25,N=22) and Cr45 (Z=24,N=21), have been established for the first time. The technique of mirrored one- and two-nucleon knockout reactions was applied to the secondary beams of V48/Mn48 and V47/Cr47 to populate states in Ti47/Mn47 and Sc45/Cr45, respectively. Mirror energy differences (MED) have been studied between the mirrored T=32 states for both mirror pairs and interpreted using both a shell-model approach and a density-functional-theory approach using the no-core configuration-interaction method. MED in this mass region provide a stringent test of the model prescriptions since both fp- and sd-shell orbitals are active and, in Cr45, spherical and well-deformed structures coexist near the ground state. The inclusive and exclusive one-nucleon removal cross sections have been determined for the populated states in Ti47/Mn47 and compared with results from reaction-model calculations.5 MoreReceived 28 April 2022Accepted 21 July 2022DOI:https://doi.org/10.1103/PhysRevC.106.024327Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI.Published by the American Physical SocietyPhysics Subject Headings (PhySH)Research AreasCoulomb energies & analogue statesDirect reactionsElectromagnetic transitionsEnergy levels & level densitiesNuclear density functional theoryNucleon-nucleon interactionsRare & new isotopesShell modelProperties39 ≤ A ≤ 58TechniquesRadioactive beamsNuclear Physics