Thisse, D; Lebois, M; Verney, D; Wilson, J N; Jovančević, N; Rudigier, M; Canavan, R; Etasse, D; Adsley, P; Algora, A; Babo, M; Belvedere, K; Benito, J; Benzoni, G; Blazhev, A; Boso, A; Bottoni, S; Bunce, M; Chakma, R; Cieplicka-Oryńczak, N; Courtin, S; Cortés, M L; Davies, P; Delafosse, C; Fallot, M; Fornal, B; Fraile, L; Gjestvang, D; Gottardo, A; Guadilla, V; Gerst, R-B; Häfner, G; Hauschild, K; Heine, M; Henrich, C; Homm, I; Hommet, J; Ibrahim, F; Iskra, Ł W; Ivanov, P; Jazrawi, S; Korgul, A; Koseoglou, P; Kröll, T; Kurtukian-Nieto, T; Le Meur, L; Leoni, S; Ljungvall, J; Lopez-Martens, A; Lozeva, R; Matea, I; Miernik, K; Nemer, J; Oberstedt, S; Paulsen, W; Piersa-Silkowska, M; Poklepa, W; Popovitch, Y; Porzio, C; Qi, L; Ralet, D; Regan, P H; Reygadas-Tello, D; Rezynkina, K; Sánchez-Tembleque, V; Siem, S; Schmitt, C; Söderström, P-A; Solak, K; Sürder, C; Tocabens, G; Vedia, V; Warr, N; Wasilewska, B; Wiederhold, J; Yavahchova, M; Zeiser, F; Ziliani, S (2023) Study of N=50 gap evolution around Z=32: new structure information for 82Ge. The European Physical Journal A, 59 (7). 153 ISSN 1434-601X

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Abstract

Abstract Medium spin states of light N = 50 isotones have been populated using fast neutron-induced fission of 232Th. Online prompt γ spectroscopy has been performed using the hybrid γ spectrometer ν-Ball coupled to the LICORNE directional neutron source at the ALTO facility of IJCLab. Medium spin states of the neutron-rich nucleus 82Ge have been investigated using γ -γ and γ -γ -γ coincidence data to exploit the resolving power of ν-Ball. Two new transitions were assigned to this nucleus and a new level was placed in the level scheme. We tentatively assigned to this new state a (7+) spin-parity, which is interpreted as a new N = 50 core breaking state. This provides further insight into the energy evolution of the N = 50 shell gap toward 78Ni.

Item Type:	Article
Keywords:	nuclear spetroscopy ; nuclear fission ; gamma-ray spectroscopy
Subjects:	Ionising Radiation > Radioactivity
Divisions:	Medical, Marine & Nuclear
Identification number/DOI:	10.1140/epja/s10050-023-01051-2
Last Modified:	16 Jun 2026 10:53
URI:	https://eprintspublications.npl.co.uk/id/eprint/10454