MSc Thesis Presentation: Beta Decay of Neutron-Rich 52K

Date and Time


SSC 1504


MSc Candidate

Robin Coleman


Nuclei away from the line of beta stability have been found to demonstrate behavior that is inconsistent with the traditional magic numbers of the spherical shell model that was developed for nuclei close to stability. This has led to the concept of the evolution of nuclear shell structure in exotic nuclei and the neutron-rich calcium isotopes are a key testing ground of these theories. However, there have been conflicting results from various experiments as to the nature of a potential sub-shell closure for neutron-rich nuclei around 52Ca. In June of 2018, an experiment was performed at the ISAC facility of TRIUMF in which a beam of 52K was delivered to the GRIFFIN gamma-ray spectrometer paired with the beta-tagging array SCEPTAR and the Zero Degree Scintillator (ZDS) auxiliary detectors, along with 8 DESCANT neutron detectors for precise beta-neutron-gamma coincidences. Using this powerful combination of detectors, the level schemes of 52Ca, 51Ca, and 50Ca populated following the beta decay of 52K have confirmed the previous assignments while the subsequent level schemes of 52Sc and 51Sc, populated by the beta decay 52Ca and 51Ca respectively, have been expanded in this work.

Examination Committee

  • Dr. Eric Poisson, Chair
  • Dr. Carl Svensson, Advisor
  • Dr. Alexandros Gezerlis
  • Dr. Dennis Muecher

Find related events by keyword

Events Archive