MSc Defense: Searching for Shape Coexistence with 123Te(n,γ) Thermal Neutron Capture

Date and Time

Location

MACN 318

Details

MSc Candidate

Erin McGee

Abstract

Shape coexistence has been established in several nuclei in the Z=50 region of the chart of nuclides, but tellurium has thus far not been definitively characterized. In an attempt to characterize the structure of 124Te, a measurement of the 123Te(n,γ) reaction was made using FIPPS, the Fission Prompt Product γ-ray Spectrometer, at the Institut Laue-Langevin in Grenoble, France. A very high statistics data set was obtained, with on the order of 108 counts in the 2+1→ 0+0 transition. γ-γ coincidence data were analyzed. Particular interest was given to the 1647 keV excited 0+ state, as a potential intruder state. B(E2) values were calculated for transitions from an elevated 2+ state that directly feeds this suspected 0+ intruder state.

Examination Committee 

  • Dr. Xiaorong Qin, Chair
  • Dr. Paul Garrett, Advisor
  • Dr. Dennis Mücher
  • Dr. Robert Wickham

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