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Spectroscopy of $^{38}$S

ORAL

Abstract

The $^{38}$S ($Z=16$, $N=22$) excited-state decay scheme has been expanded including a number of new levels with tentative spin-parity assignments. In particular, the yrast sequence has been expanded up to $J^{\pi}=8^+$ with candidates for $J>8$ identified as well. Interpretations of the new data with respect to theoretical calculations and the systematic trends in region have been made and will be discussed. In general, the excited levels of $^{38}$S were well described by shell model calculations invoking the newly developed FSU cross-shell interaction. $^{38}$S nuclei were populated via fusion and subsequent two-proton evaporation of a $^{22}$Ne beam on an $^{18}$O target at $\sim$45~MeV. $^{38}$S recoils were identified using a feed-forward trained neural network including inputs of position, time-of-flight, and energy loss information taken at the focal plane of the FMA. Gretina surrounded the target position and detected prompt $\gamma$-rays in coincidence with $^{38}$S recoils. Coincidences, energy summations, intensities, and angular information were all used in the construction of the final $^{38}$S decay scheme.

Authors

  • C. R. Hoffman

    Argonne National Laboratory