Speaker
Description
The intruder bands in the mid-shell Sn isotopes, built on the proton 2p-2h excitation across the $Z = 50$ shell gap, are well-known examples of shape coexistence, where more than one shapes appear within the same nucleus. Spectroscopic signatures for shape coexistence include enhanced $E0$ transitions between the $0^+$ band heads. However, until now, lifetime information for the $0^+$ states in $^{120}$Sn has been incomplete. The first measurement of the $0^+_3$ lifetime in $^{120}$Sn using the fast-timing technique following thermal-neutron capture will be presented in this talk. The first $\rho^2(E0; 0^+_3 → 0^+_2)$ value obtained from this experiment, which is sensitive to the deformation and mixing between the $0^+$ states, will be discussed.
| Your current academic level | PhD student |
|---|---|
| Your email address | twa73@sfu.ca |
| Affiliation | SFU |
| Supervisor name | Corina Andreoiu |
| Supervisor email | caa12@sfu.ca |
