Study of the exotic nuclei with GRIFFIN.

The experiment S1723 conducted at the ISAC facility at TRIUMF, Canada, involves the generation of RIB using the ISOL technique. A proton beam \cite{svensson2014griffin}is employed to induce various nuclear reactions, such as spallation, fragmentation, and fission, in suitable target materials, resulting in a wide range of isotopes. Among these, $^{62}$Mn is produced via the fission process. To selectively isolate specific isotope species from this mixture, RILIS technology is utilized. RILIS employs a precisely tunable narrow-band laser to selectively excite and ionize target atomic or isotopic species. Subsequently, a potential difference accelerates the ionized isotopic species with energies between 20 keV and 40 keV \cite{garnsworthy2019griffin}. The isotopes are then directed to the ISOL mass separator, where magnetic forces separate and isolate the desired isotope, in this case, $^{62}$Mn \cite{kunz2023understanding, baartman2014isac, raeder2013source}. The $^{62}$Fe isotope was studied via the decay of $^{62}$Mn using the GRIFFIN spectrometer, comprising 16 high-purity germanium (HPGe) clover-type detectors, augmented by auxiliary detection systems. This thesis presents a detailed construction of a new level scheme for $^{62}$Fe, in comparison to previous reports \cite{runte1983decay} and \cite{hoteling2010structure}. The analysis includes the identification of new transitions and excited states, as well as the calculation of log ft values for observed transitions and states, and suggests new spin-parity for the new levels.