Orateur
Description
The shape transition from spherical nuclear states $(N<59)$ towards deformed states $(N>59)$ is of high interest as it provides fertile ground for the validation of nuclear models. The $N=59$ nuclide $^{98}$Y is located precisely at this transition point and is characterized by shape coexistence of several nuclear deformations.
g-factor measurements of the $(2^{-})$ 171keV and $(4^{-})$ 375keV excited states of $^{98}$Y have been performed in two separate experiments using the Lohengrin mass spectrometer at Institut Laue-Langevin (ILL). Decay gammas from the isotope were collected in LaBr$_{3}$ scintillator detectors coupled to Silicon Photomultipliers (SiPM), and analysis was performed via the Time-Differential Perturbed Angular Correlation (TDPAC) method.
This work presents the setup, analysis, and results of the experiment in addition to some comparisons with select nuclear models.
