Spectroscopy of ${}^{33}$Mg with knockout reactions

Abstract

The structure of ${}^{33}$Mg was investigated by means of two knockout reactions, one-neutron removal from ${}^{34}$Mg and one-proton removal from ${}^{34}$Al. Using comparative analysis of the population of observed excited states in the residual ${}^{33}$Mg, the nature of these states can be deciphered. In addition, the long-standing controversy about the parity of the ${}^{33}$Mg ground state is resolved using momentum distribution analysis, showing a clear signature for negative parity. Partial cross section measurements are compared with the results of eikonal reaction theory combined with large-scale shell model calculations of this complex nucleus located in the island of inversion, where configuration mixing plays a major role.

References in corpus (13)

• Improved nuclear matter calculations from chiral low-momentum interactions
• Evolution of shell structure in exotic nuclei
• A nucleus-dependent valence-space approach to nuclear structure
• Shape transitions in exotic Si and S isotopes and tensor-force-driven Jahn-Teller effect
• A new effective interaction for $0\hslash \omega$ shell model calculations in the sdpf valence space
• DALI2: A NaI(Tl) detector array for measurements of $\gamma$ rays from fast nuclei
• The merging of the islands of inversion at N=20 and N=28
• Systematics of intermediate-energy single-nucleon removal cross sections
• The Magnus expansion and the in-medium similarity renormalization group
• Ab initio multi-shell valence-space Hamiltonians and the island of inversion
• Spectroscopy of 32Ne and the Island of Inversion
• Exotic neutron-rich medium-mass nuclei with realistic nuclear forces
• Neutron shell structure and deformation in neutron-drip-line nuclei

Cited by in corpus (9)

• Recent progress in configuration-interaction shell model
• Ab initio nuclear shape coexistence and emergence of island of inversion around $N=20$
• Intruder configurations in ${}^{29}$Ne at the transition into the island of inversion: Detailed structure study of ${}^{28}$Ne
• In-beam $\gamma$-ray spectroscopy of ${}^{32}$Mg via direct reactions
• Border of the Island of Inversion: Unbound states in ${}^{29}$Ne
• Ab initio study of island of inversion in odd-$A$ nuclei: Structure of ${}^{31,33}$Mg
• Investigating nuclear density profiles to reveal particle-hole configurations in the island of inversion
• Weak interaction rates of $sd$-shell Urca pairs in stellar environment using a shell-model approach
• Coexisting normal and intruder configurations in ${}^{32}$Mg