In-beam γ -ray spectroscopy of the neutron-rich platinum isotope Pt200 toward the N=126 shell gap

6533b862fe1ef96bd12c6149

RESEARCH PRODUCT

In-beam γ -ray spectroscopy of the neutron-rich platinum isotope Pt200 toward the N=126 shell gap

S. M. Lenzi S. M. Lenzi M. Bunce A. Vogt B. Birkenbach A. M. Bizzeti-sona A. M. Bizzeti-sona A. Gottardo W. Korten Michele Sferrazza P. Reiter A. Kusoglu M. D. Salsac J. Walshe C. A. Ur P. R. John P. R. John Fernando Scarlassara Fernando Scarlassara F. Recchia F. Recchia P. G. Bizzeti P. G. Bizzeti D. Bazzacco A. M. Stefanini L. Corradi A. Bracco A. Bracco L. Grente C. Wheldon Roberto Menegazzo Roberto Menegazzo G. Montagnoli G. Montagnoli G. Pollarolo G. Pollarolo D. Mengoni D. Mengoni Tz. Kokalova T. Mijatović V. Modamio Tomás R. Rodríguez Tomás R. Rodríguez Zs. Podolyák A. Gadea Herbert Hess F. Browne M. Barr G. Benzoni G. Benzoni F. C. L. Crespi F. C. L. Crespi Suzana Szilner E. Fioretto B. Melon B. Melon S. Leoni S. Leoni M. Bowry E. Farnea C. Michelagnoli C. Michelagnoli S. Bottoni S. Bottoni S. Lunardi S. Lunardi D. Montanari D. Montanari G. De Angelis Oliver J. Roberts Pär-anders Söderström E. Sahin J. Ljungvall J. J. Valiente-dobón N. I. Ashwood D. R. Napoli F. Camera F. Camera T. Alexander

subject

Physics 010308 nuclear & particles physics Astrophysics::High Energy Astrophysical Phenomena Nuclear Theory Gamma ray Order (ring theory)7. Clean energy 01 natural sciences medicine.anatomical_structure Excited state 0103 physical sciences medicine Neutron AGATA Gamma spectroscopy Atomic physics Nuclear Experiment 010306 general physics Spectroscopy Nucleus

description

The neutron-rich nucleus \nucleus{200}{Pt} is investigated via in-beam \gamma-ray spectroscopy in order to study the shape evolution in the neutron-rich platinum isotopes towards the N = 126 shell closure. The two-neutron transfer reaction \nucleus{198}{Pt}(\nucleus{82}{Se}, \nucleus{80}{Se})\nucleus{200}{Pt} is used to populate excited states of \nucleus{200}{Pt}. The Advanced Gamma Ray Tracking Array (AGATA) demonstrator coupled with the PRISMA spectrometer detects \gamma rays coincident with the \nucleus{80}{Se} recoils, the binary partner of \nucleus{200}{Pt}. The binary partner method is applied to extract the \gamma-ray transitions and build the level scheme of \nucleus{200}{Pt}. The level at 1884\,keV reported by Yates et. al [Phys. Rev. C 37, 1889] was confirmed to be at 1882.1\,keV and assigned as the (6^+_1) state. An additional \gamma ray was found and it presumably de-excites the (8^+_1) state. The results are compared with state-of-the-art beyond mean-field calculations, performed for the even-even \nucleus{190-204}{Pt} isotopes, revealing that \nucleus{200}{Pt} marks the transition from the \gamma-unstable behaviour of lighter Pt nuclei towards a more spherical one when approaching the N=126 shell closure.

year	journal	country	edition	language
2017-06-22	Physical Review C

https://doi.org/10.1103/physrevc.95.064321