The 59th Winter Nuclear & Particle Physics Conference (WNPPC2022)

Mirror Symmetry in the $f_{1/2}$ Shell Below $^{56}$Ni, Excited States and Electromagnetic Transition Rates in $^{55}$Ni and $^{55}$Co

15 Feb 2022, 08:48

12m

virtual

Nuclear and Particle Physics Nuclear Physics

Speaker

Tyson Schilbach (Simon Fraser University Physics Department)

Description

Experiment S1758 aims to explore the charge dependence of the strong nuclear interaction by probing $^{55}$Ni and $^{55}$Co near the $\mathit{doubly}$ $\mathit{magic}$ $^{56}$Ni. This will be achieved by impinging beams of radioactive $^{20}$Na and stable $^{20}$Ne upon $^{40}$Ca targets to produce $^{55}$Ni and $^{55}$Co, respectively. Charged particles and $\gamma$-rays will be detected by combining TRIUMF-ISAC Gamma-Ray Escape Suppressed Spectrometer (TIGRESS), the TIGRESS Integrated Plunger (TIP) and the CsI Ball. This trio allows for a higher degree of sensitivity when in unison. Data analysis will involve: transition rate reconstruction using the Doppler-Shift Attenuation Method (DSAM), Doppler-shift lineshape profile extraction from Monte Carlo simulations via the GEANT4 framework, and lifetime extraction from minimizing a $\chi^2$ goodness-of-fit between the measured and simulated lineshapes. The results will paint a clearer picture of the charge dependence of the strong nuclear interaction.

Presentation materials

S1758.pdf