arXiv:2110.03284·v1·Nuclear Experiment
Investigation of the ground-state spin inversion in the neutron-rich 47,49Cl isotopes
B.D. Linh🇻🇳 · A. Corsi🇫🇷 · A. Gillibert🇫🇷 · A. Obertelli🇫🇷 · P. Doornenbal🇯🇵 · C. Barbieri🇮🇹 · S. Chen🇨🇳 · L.X. Chung🇻🇳 · T. Duguet🇫🇷 · M. Gómez-Ramos🇩🇪 · J.D. Holt🇨🇦 · A. Moro🇪🇸
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.