Investigation of the ground-state spin inversion in the neutron-rich 47,49Cl isotopes

Abstract

A first gamma-ray study of 47,49Cl spectroscopy was performed at the Radioactive Isotope Beam Factory with 50Ar projectiles at 217 MeV/nucleon, impinging on the liquid hydrogen target of the MINOS device. Prompt de-excitation gamma-rays were measured with the NaI(Tl) array DALI2+. Through the one-proton knockout reaction 50Ar(p,2p), a spin assignment could be determined for the low-lying states of 49Cl from the momentum distribution obtained with the SAMURAI spectrometer. A spin-parity J = 3/2+ is deduced for the ground state of 49Cl, similar to the recently studied N = 32 isotope 51K.

References in corpus (39)

• Modern Theory of Nuclear Forces
• Chiral effective field theory and nuclear forces
• Accurate Charge-Dependent Nucleon-Nucleon Potential at Fourth Order of Chiral Perturbation Theory
• Improved nuclear matter calculations from chiral low-momentum interactions
• Novel features of nuclear forces and shell evolution in exotic nuclei
• Accurate nuclear radii and binding energies from a chiral interaction
• Thick-Restart Block Lanczos Method for Large-Scale Shell-Model Calculations
• Collapse of the N=28 shell closure in ${}^{42}$Si
• A nucleus-dependent valence-space approach to nuclear structure
• Non-Empirical Interactions for the Nuclear Shell Model: An Update
• Identification and Separation of Radioactive Isotope Beams by the BigRIPS Separator at the RIKEN RI Beam Factory
• Structure of the lightest tin isotopes
• Ab initio limits of atomic nuclei
• Nonperturbative shell-model interactions from the in-medium similarity renormalization group
• Shape transitions in exotic Si and S isotopes and tensor-force-driven Jahn-Teller effect
• Saturation with chiral interactions and consequences for finite nuclei
• Novel chiral Hamiltonian and observables in light and medium-mass nuclei
• DALI2: A NaI(Tl) detector array for measurements of $\gamma$ rays from fast nuclei
• Ab-initio self-consistent Gorkov-Green's function calculations of semi-magic nuclei - I. Formalism at second order with a two-nucleon interaction
• Ground and excited states of doubly open-shell nuclei from ab initio valence-space Hamiltonians
• Dawning of the N=32 shell closure seen through precision mass measurements of neutron-rich titanium isotopes
• Exploring sd-shell nuclei from two- and three-nucleon interactions with realistic saturation properties
• Ab-initio self-consistent Gorkov-Green's function calculations of semi-magic nuclei - II. Numerical implementation at second order with a two-nucleon interaction
• Quasi-free (p,2p) and (p,pn) reactions with unstable nuclei
• Self-consistent Green's function theory for atomic nuclei
• How Robust is the N = 34 Subshell Closure? First Spectroscopy of ${}^{52}$Ar
• Shape Coexistence Around ${}_{16}^{44}$S${}_{28}$: The Deformed N=28 Region
• Ab initio computation of charge densities for Sn and Xe isotopes
• Spins and Magnetic Moments of ${}^{49}$K and ${}^{51}$K: establishing the 1/2${}^{+}$ and 3/2${}^{+}$ level ordering beyond $N$ = 28
• Binding-energy independence of reduced spectroscopic strengths derived from (p, 2p) and (p, pn) reactions with nitrogen and oxygen isotopes
• Evolution of the $E(1/2_1^{+})-E(3/2_1^{+})$ energy spacing in odd-mass K, Cl and P isotopes for $N=20-28$
• Shell structure of potassium isotopes deduced from their magnetic moments
• Lepton scattering from ${}^{40}$Ar and ${}^{48}$Ti in the quasielastic peak region
• A three-body model for the analysis of quasi-free scattering reactions in inverse kinematics
• Nuclear electromagnetic dipole response with the Self-Consistent Green's Function formalism
• Moving away from singly-magic nuclei with Gorkov Green's function theory
• Examining the $N$ = 28 shell closure through high-precision mass measurements of ${}^{46-48}$Ar
• $\mathbf{N}=32$ shell closure below calcium: Low-lying structure of ${}^{50}$Ar
• Benchmarking theoretical formalisms for $(p,pn)$ reactions: the ${}^{15}$C($p,pn$)${}^{14}$C case

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