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Shape coexistence in Sn isotopes around $A=110$.
Corbari G., Leoni S., Benzoni G., Bottoni S., Camera F., Ciconali G., Crespi F.C.L., Million B., Wieland O., Fornal B., Ciemala M., Cieplicka-Orynczak N., Iskra L., Matejska-Minda M., Muarginean N., Mihai C., Costache C., Muarginean R., Turturicua A., Ujeniuc S., Cuciuc C.M., Balogh M., Brugnara D., Ertoprak A., Galtarossa F., Goasduff A., Gottardo A., Napoli D.R., Pellumaj J., Pérez-Vidal R.M., Sedlak M., Valiente-Dobon J.J., Zanon I., Aguilera P., Benito J., Carollo S., Escudeiro R., Lenzi S.M., Mengoni D., Pigliapoco S., Pilotto E., Polettini M., Recchia F., Rezynkina K., Zago L., Zhang G., Zhen H., Colombi G., Michelagnoli C., Sferrazza M., Otsuka T., Tsunoda Y.
The shape coexistence phenomenon, a major topic in modern nuclear physics, was investigated in Sn isotopes around $A=110$ via $\gamma-ray$ spectroscopy and lifetime measurements of low-spin states. Two experiments were performed at LNL with the AGATA-PRISMA setup and at IFIN-HH with the ROSPHERE-SORCERER array. In both cases, the Recoil Distance Doppler Shift method was applied to determine the lifetime of excited states in $^{110,112}Sn$ and $^{114}Sn$ nuclei, which were populated by low-energy multi-nucleon transfer reactions. Of particular interest is the lifetime of excited $0^+$ states, which can be interpreted as ground states of configurations built on different nuclear deformation. The analysis is ongoing and results will be compared with state-of-the-art Monte Carlo Shell Model calculations, giving an insight into the microscopic mechanism leading to the onset of deformation in atomic nuclei.