TY  - JOUR
AU  - AGATA Collaboration (John, P. R. et al
AU  - Gadea, A.
PY  - 2017
DA  - 2017//
TI  - In-beam gamma-ray spectroscopy of the neutron-rich platinum isotope Pt-200 toward the N=126 shell gap
T2  - Phys. Rev. C
JO  - Physical Review C
SP  - 064321
EP  - 8pp
VL  - 95
IS  - 6
PB  - Amer Physical Soc
AB  - The neutron-rich nucleus Pt-200 is investigated via in-beam gamma-ray spectroscopy to study the shape evolution in the neutron-rich platinum isotopes towards the N = 126 shell closure. The two-neutron transfer reaction Pt-198(Se-82, Se-80)Pt-200 is used to populate excited states of Pt-200. The Advanced Gamma Ray Tracking Array (AGATA) demonstrator coupled with the PRISMA spectrometer detects gamma rays coincident with the Se-80 recoils, the binary partner of Pt-200. The binary partner method is applied to extract the gamma-ray transitions and build the level scheme of Pt-200. The level at 1884 keV reported by Yates et al. [S. W. Yates, E. M. Baum, E. A. Henry, L. G. Mann, N. Roy, A. Aprahamian, R. A. Meyer, and R. Estep, Phys. Rev. C 37, 1889 (1988)] was confirmed to be at 1882.1 keV and assigned as the (6(1)(+)) state. An additional gamma ray was found and it presumably deexcites the (8(1)(+)) state. The results are compared with state-of-the-art beyond mean-field calculations, performed for the even-even Pt190-204 isotopes, revealing that Pt-200 marks the transition from the gamma-unstable behavior of lighter Pt nuclei towards a more spherical one when approaching the N = 126 shell closure.
SN  - 2469-9985
UR  - https://doi.org/10.1103/PhysRevC.95.064321
DO  - 10.1103/PhysRevC.95.064321
LA  - English
N1  - WOS:000404021900005
ID  - AGATACollaborationJohn+Gadea2017
ER  -