PhD Thesis Presentation: 124Xe Angular Correlation Analysis and Development of the Detector Array for Energy Measurements Of Neutrons (DAEMON)
Date and Time
Location
Virtual
Details
PhD Candidate
Allison Radich
Abstract
This work details two distinct and separate projects. The first is the investigation of collective signatures of \(^{124}Xe\) via the \(0^+\)-decay of \(^{124}Cs\) performed at the \(8\pi\) spectrometer at TRIUMF. A full analysis was performed resulting in \(\gamma - ray\) branching ratios, \(\beta-feeding\) intensities and B(E2) quadrupole transition strengths. Angular correlations were performed and the spins of 15 \(0^+\) states and 14 higher spin states were measured. The band structure built on the lower-energy excited \(0^+\) states was expanded and compared to theoretical calculations.
The second project contains the initial developmental tests for the Detector Array for Energy Measurements Of Neutrons (DAEMON). DAEMON is proposed to be a time-of-flight detector used with DESCANT at the GRIFFIN decay station at TRIUMF to measure neutron energies emitted via \(\beta-delayed\) neutron emission from neutron-rich nuclei. Potential scintillator material, silicon photomultiplier (SiPM) scintillation light collection methods and data acquisition systems were tested. The timing resolution achieved by a scintillator-SiPM setup was found to be as low as 339(4) ps FWHM, which is well within the limits required to achieve the desired energy resolution.
Examination Committee
- Dr. Eric Poisson, Chair
- Dr. Paul Garrett, Advisor
- Dr. Carl Svensson, Advisory Committee
- Dr. Alexandros Gezerlis, Graduate Faculty
- Dr. Martin Venhart, External Examiner (Inst of Physics, Slovak Academy of Sciences)