EPJ Web of Conferences (Jan 2025)
Search for shape coexistence in the Selenium isotopes near the N=50 neutron shell closure
- Ciconali G.,
- Conca F.,
- Bottoni S.,
- Leoni S.,
- Fornal B.,
- Sferrazza M.,
- Michelagnoli C.,
- Mărginean N.,
- Corbari G.,
- Luciani M.,
- Colombi G.,
- Crespi F.,
- Cieplicka N.,
- Iskra L.,
- Jentschel M.,
- Koester U.,
- Borcea R.,
- Boromiza M.,
- Călinescu S.,
- Clisu-Stan C.,
- Costache C.,
- Filipescu D.,
- Florea N.,
- Gheorghe I.,
- Ionescu A.,
- Mărginean R.,
- Mihai C.,
- Mihai R.E.,
- Neacșu C.,
- Negreț A.,
- Niță C.R.,
- Olăcel-Coman A.,
- Pascu S.,
- Petrone C.,
- Stan L.,
- Sotty C.,
- Turturică A.,
- Turturică G.,
- Toma S.,
- Ujeniuc S.
Affiliations
- Ciconali G.
- Dipartimento di Fisica, Università degli Studi di Milano
- Conca F.
- Dipartimento di Fisica, Università degli Studi di Milano
- Bottoni S.
- Dipartimento di Fisica, Università degli Studi di Milano
- Leoni S.
- Dipartimento di Fisica, Università degli Studi di Milano
- Fornal B.
- Instytut Fizyki Jądrowej IFJ-PAN
- Sferrazza M.
- Université libre de Bruxelles (ULB)
- Michelagnoli C.
- Institut Laue-Langevin (ILL)
- Mărginean N.
- Horia Hulubei National Institute for Physics and Nuclear Engineering
- Corbari G.
- Dipartimento di Fisica, Università degli Studi di Milano
- Luciani M.
- Dipartimento di Fisica, Università degli Studi di Milano
- Colombi G.
- Dipartimento di Fisica, Università degli Studi di Milano
- Crespi F.
- Dipartimento di Fisica, Università degli Studi di Milano
- Cieplicka N.
- Instytut Fizyki Jądrowej IFJ-PAN
- Iskra L.
- Instytut Fizyki Jądrowej IFJ-PAN
- Jentschel M.
- Institut Laue-Langevin (ILL)
- Koester U.
- Institut Laue-Langevin (ILL)
- Borcea R.
- Horia Hulubei National Institute for Physics and Nuclear Engineering
- Boromiza M.
- Horia Hulubei National Institute for Physics and Nuclear Engineering
- Călinescu S.
- Horia Hulubei National Institute for Physics and Nuclear Engineering
- Clisu-Stan C.
- Horia Hulubei National Institute for Physics and Nuclear Engineering
- Costache C.
- Horia Hulubei National Institute for Physics and Nuclear Engineering
- Filipescu D.
- Horia Hulubei National Institute for Physics and Nuclear Engineering
- Florea N.
- Horia Hulubei National Institute for Physics and Nuclear Engineering
- Gheorghe I.
- Horia Hulubei National Institute for Physics and Nuclear Engineering
- Ionescu A.
- Horia Hulubei National Institute for Physics and Nuclear Engineering
- Mărginean R.
- Horia Hulubei National Institute for Physics and Nuclear Engineering
- Mihai C.
- Horia Hulubei National Institute for Physics and Nuclear Engineering
- Mihai R.E.
- Horia Hulubei National Institute for Physics and Nuclear Engineering
- Neacșu C.
- Horia Hulubei National Institute for Physics and Nuclear Engineering
- Negreț A.
- Horia Hulubei National Institute for Physics and Nuclear Engineering
- Niță C.R.
- Horia Hulubei National Institute for Physics and Nuclear Engineering
- Olăcel-Coman A.
- Horia Hulubei National Institute for Physics and Nuclear Engineering
- Pascu S.
- Horia Hulubei National Institute for Physics and Nuclear Engineering
- Petrone C.
- Horia Hulubei National Institute for Physics and Nuclear Engineering
- Stan L.
- Horia Hulubei National Institute for Physics and Nuclear Engineering
- Sotty C.
- Horia Hulubei National Institute for Physics and Nuclear Engineering
- Turturică A.
- Horia Hulubei National Institute for Physics and Nuclear Engineering
- Turturică G.
- Horia Hulubei National Institute for Physics and Nuclear Engineering
- Toma S.
- Horia Hulubei National Institute for Physics and Nuclear Engineering
- Ujeniuc S.
- Horia Hulubei National Institute for Physics and Nuclear Engineering
- DOI
- https://doi.org/10.1051/epjconf/202532901003
- Journal volume & issue
-
Vol. 329
p. 01003
Abstract
Aim of this contribution is the investigation of the shape coexistence phenomenon in the neutron-rich Selenium (Z=34) isotopes at or near the N=50 shell closure, by γ-ray spectroscopy. The 83Se (N=49) and 84Se (N=50) nuclei were populated by neutron capture (ILL) and a sub-Coulomb barrier transfer reaction (IFIN-HH), respectively. The decay schemes of both nuclei were significantly extended and they are still under investigation. Concerning the 83Se, γ-spectroscopy data allowed for the identification of 28 new primary γ transitions, 16 new levels and 89 new secondary γ transitions. Firm spin and parity assignment of the newly found states will be obtained from angular correlation investigation, currently ongoing. In the case of 84Se, the γ decay from the second and third 0! states were observed for the first time and preliminary results from lifetime measurements were obtained for both the states.
