Particle-core coupling in S 37

Chapman, R. and Wang, Z. M. and Bouhelal, M. and Haas, F. and Liang, X. and Dombrádi, Zsolt (2016) Particle-core coupling in S 37. PHYSICAL REVIEW C, 93 (4). pp. 1-8. ISSN 0556-2813

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Abstract

Excited states of the neutron-rich N=21 S37 nucleus have been studied using binary grazing reactions produced by the interaction of a 215-MeV beam of S36 ions with a thin Pb208 target. The magnetic spectrometer, PRISMA, and the γ-ray array, CLARA, were used in the measurements. The level scheme of S37 was established to an excitation energy of 4196 keV and a number of new transitions were observed, in particular that corresponding to the decay of the proposed Jπ=(11/2-) level at an excitation energy of 2776 keV. The structure of the state is discussed within the context of state-of-the-art shell-model calculations using the SDPF-U effective interaction; the main component of the wave function corresponds to the coupling of the odd 1f7/2 neutron to the first 2+ state of the S36 core. The electromagnetic decay properties of the state are discussed within the context of a particle-core coupling model and the shell model. The other members of the multiplet of states are also discussed. © 2016 American Physical Society.

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