RT Journal Article
T1 Low-Z boundary of the N=88-90 shape phase transition: Ce-148 near the critical point
A1 Fraile Prieto, Luis Mario
A1 Paziy, Vadym
A1 otros, ...
AB Excited states of the neutron-rich nucleus Ce-148 have been populated by neutron-induced fission of a U-235 target. Its electromagnetic decays were studied by means of gamma-ray coincidence spectroscopy with fast-timing capabilities. Lifetimes of the 2(1)(+) and 4(1)(+) states of Ce-148 were obtained and their E2 decay rates deduced. The B-4/2 = B(E2; 4(1)(+) -> 2(1)(+))/B(E2; 2(1)(+) -> 0(1)(+)) ratio indicates that Ce-148 is a transitional nucleus while the N = 88/90 shape phase transition evolves into a gradual change of nuclear deformation for proton numbers Z < 60.
PB American Physical Society
SN 2469-9985
YR 2020
FD 2020-01-06
LK https://hdl.handle.net/20.500.14352/6099
UL https://hdl.handle.net/20.500.14352/6099
LA eng
NO Artículo firmado por 37 autores. We are grateful to F. Iachello, R. F. Casten, and D. Bonatsos for useful discussions. The EXILL&FATIMA campaign would not have been possible without the support of several services at the ILL and the LPSC. We are grateful to the EXOGAM collaboration for the loan of the detectors, to GANIL for assistance during installation and dismantling, and to the FATIMA collaboration for the provision of LaBr3 (Ce) detectors and analog electronics. This work was supported by the cooperation between TU Darmstadt and the GSI Helmholtz Center for Heavy Ion Research and by the Helmholtz Graduate School for Hadron and Ion Research for FAIR, by the QuantiXLie Centre of Excellence, a project co-financed by the Croatian Government and European Union through the European Regional Development Fund - the Competitiveness and Cohesion Operational Programme (Grant No. KK.01.1.1.01), by US DOE under Grant No. DE-FG02-91ER-40609, by UK Science and Technologies Facilities Council (STFC) under Grants No. ST/L005743/1, No. ST/G000751/1, No. ST\L\0057\1, and No. ST\P005314\1, by Istanbul University Scientific Research Project No. 54135, by DFG under Grants No. KR 1796/2-1,2 and No. SFB1245 and by BMBF under Grants No. 05P12RDNUP, No. 05P(15/19)RDFN1, No. 05P(15/19)PKFNA, and No. 05P12PKNUF. P.H.R. acknowledges partial support from the UK Department of Business, Energy and Industrial Strategy (BEIS) via the National Measurement System (NMS). P.A. acknowledges support from SP2018/84 and LO1406 projects.
NO TU Darmstadt
NO GSI Helmholtz Center for Heavy Ion Research
NO Helmholtz Graduate School for Hadron and Ion Research for FAIR
NO QuantiXLie Centre of Excellence
NO Croatian Government
NO European Union through the European Regional Development Fund - the Competitiveness and Cohesion Operational Programme
NO US DOE United States Department of Energy
NO UK Science and Technologies Facilities Council (STFC)
NO Istanbul University
NO DFG German Research Foundation
NO BMBF Federal Ministry of Education & Research
NO UK Department of Business, Energy and Industrial Strategy (BEIS) via the National Measurement System (NMS)
DS Docta Complutense
RD 30 abr 2024