High spin intruder states of $^{44}$Ca and $^{45}$Ca using fusion evaporation reactions

ORAL

Abstract

Identifying collective states with clear n-particle-n-hole structure near closed shells can reveal deformation driving orbital characteristics. Such states, often high-spin in nature, can be populated using the fusion-evaporation reaction mechanism, extracted using gamma-ray spectroscopy techniques and compared to state-of-the-art theoretical shell model calculations. Recently, an experiment to look for intruder states in $^{44,45}$Ca was done using the $^{36}$S$(^{14}$C$,p)$ and $^{36}$S$(^{14}$C,$pn)$ reactions at 34-MeV performed at Florida State University's John D. Fox superconducting Laboratory. The experimental setup included an array of HPGe detectors surrounding the enriched $^{36}$S as well as a Si particle detector telescope located at zero-degrees with respect to the beam axis. The telescope has allowed specific reaction residue to be correlated with observed $\gamma$-rays. We present preliminary results from the experiment.

*This research was funded by the Department of Energy

Authors

  • Andrew MacGregor

    • Univ of Mass - Lowell
  • Peter DeRosa

    • Univ of Mass - Lowell
  • Dan Foulds-Holt

    • Univ of Mass - Lowell
  • Peter Bender

    • Univ of Mass - Lowell