In-beam spectroscopic studies of $^{44}$S nucleus

Details In-beam spectroscopic studies of $^{44}$S nucleus In-beam spectroscopic studies of $^{44}$S nucleus

2012-01-06

arxiv.org/abs/1201.1366v1

Physical Review C 85 (2012) 024311

Physics

Nuclear Physics

Nuclear Experiment

6 pages, 5 figures, accepted for publication in Physical Review C

Scientific paper

10.1103/PhysRevC.85.024311

The structure of the $^{44}$S nucleus has been studied at GANIL through the one proton knock-out reaction from a $^{45}$Cl secondary beam at 42 A$\cdot$MeV. The $\gamma$ rays following the de-excitation of $^{44}$S were detected in flight using the 70 BaF${_2}$ detectors of the Ch\^{a}teau de Cristal array. An exhaustive $\gamma\gamma$-coincidence analysis allowed an unambiguous construction of the level scheme up to an excitation energy of 3301 keV. The existence of the spherical 2$^+_2$ state is confirmed and three new $\gamma$-ray transitions connecting the prolate deformed 2$^+_1$ level were observed. Comparison of the experimental results to shell model calculations further supports a prolate and spherical shape coexistence with a large mixing of states built on the ground state band in $^{44}$S.

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