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In-beam gamma-ray spectroscopy of the neutron-rich platinum isotope 200Pt toward the N = 126 shell gap

John, PR, Valiente-Dob on, JJ, Mengoni, D, Modamio, V, Lunardi, S, Bazzacco, D, Gadea, A, Wheldon, C, Rodr guez, TR, Alexander, T , de Angelis, G, Ashwood, N, Barr, M, Benzoni, G, Birkenbach, B, Bizzeti, PG, Bizzeti-Sona, AM, Bottoni, S, Bowry, M, Bracco, A, Browne, F, Bunce, M, Camera, F, Corradi, L, Crespi, FCL, Melon, B, Farnea, E, Fioretto, E, Gottardo, A, Grente, L, Hess, H, Kokalova, T, Mijatovi c, T, Montagnoli, G, Montanari, D, Napoli, DR, Podolyak, Zsolt, Pollarolo, G, Recchia, F, Reiter, P, Roberts, OJ, Sahin, E, Salsac, M-D, Scarlassara, F, Sferrazza, M, Soderstrom, P-A, Stefanini, AM, Szilner, S, Ur, CA, Vogt, A and Walshe, A (2017) In-beam gamma-ray spectroscopy of the neutron-rich platinum isotope 200Pt toward the N = 126 shell gap Physical Review C: Nuclear Physics, 95, 064321. 064321-1.

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Abstract

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.

Item Type: Article
Subjects : Physics
Divisions : Faculty of Engineering and Physical Sciences > Physics
Authors :
NameEmailORCID
John, PRUNSPECIFIEDUNSPECIFIED
Valiente-Dob on, JJUNSPECIFIEDUNSPECIFIED
Mengoni, DUNSPECIFIEDUNSPECIFIED
Modamio, VUNSPECIFIEDUNSPECIFIED
Lunardi, SUNSPECIFIEDUNSPECIFIED
Bazzacco, DUNSPECIFIEDUNSPECIFIED
Gadea, AUNSPECIFIEDUNSPECIFIED
Wheldon, CUNSPECIFIEDUNSPECIFIED
Rodr guez, TRUNSPECIFIEDUNSPECIFIED
Alexander, TUNSPECIFIEDUNSPECIFIED
de Angelis, GUNSPECIFIEDUNSPECIFIED
Ashwood, NUNSPECIFIEDUNSPECIFIED
Barr, MUNSPECIFIEDUNSPECIFIED
Benzoni, GUNSPECIFIEDUNSPECIFIED
Birkenbach, BUNSPECIFIEDUNSPECIFIED
Bizzeti, PGUNSPECIFIEDUNSPECIFIED
Bizzeti-Sona, AMUNSPECIFIEDUNSPECIFIED
Bottoni, SUNSPECIFIEDUNSPECIFIED
Bowry, MUNSPECIFIEDUNSPECIFIED
Bracco, AUNSPECIFIEDUNSPECIFIED
Browne, FUNSPECIFIEDUNSPECIFIED
Bunce, MUNSPECIFIEDUNSPECIFIED
Camera, FUNSPECIFIEDUNSPECIFIED
Corradi, LUNSPECIFIEDUNSPECIFIED
Crespi, FCLUNSPECIFIEDUNSPECIFIED
Melon, BUNSPECIFIEDUNSPECIFIED
Farnea, EUNSPECIFIEDUNSPECIFIED
Fioretto, EUNSPECIFIEDUNSPECIFIED
Gottardo, AUNSPECIFIEDUNSPECIFIED
Grente, LUNSPECIFIEDUNSPECIFIED
Hess, HUNSPECIFIEDUNSPECIFIED
Kokalova, TUNSPECIFIEDUNSPECIFIED
Mijatovi c, TUNSPECIFIEDUNSPECIFIED
Montagnoli, GUNSPECIFIEDUNSPECIFIED
Montanari, DUNSPECIFIEDUNSPECIFIED
Napoli, DRUNSPECIFIEDUNSPECIFIED
Podolyak, ZsoltZ.Podolyak@surrey.ac.ukUNSPECIFIED
Pollarolo, GUNSPECIFIEDUNSPECIFIED
Recchia, FUNSPECIFIEDUNSPECIFIED
Reiter, PUNSPECIFIEDUNSPECIFIED
Roberts, OJUNSPECIFIEDUNSPECIFIED
Sahin, EUNSPECIFIEDUNSPECIFIED
Salsac, M-DUNSPECIFIEDUNSPECIFIED
Scarlassara, FUNSPECIFIEDUNSPECIFIED
Sferrazza, MUNSPECIFIEDUNSPECIFIED
Soderstrom, P-AUNSPECIFIEDUNSPECIFIED
Stefanini, AMUNSPECIFIEDUNSPECIFIED
Szilner, SUNSPECIFIEDUNSPECIFIED
Ur, CAUNSPECIFIEDUNSPECIFIED
Vogt, AUNSPECIFIEDUNSPECIFIED
Walshe, AUNSPECIFIEDUNSPECIFIED
Date : 22 June 2017
Funders : Science and Technology Facilities Council (STFC)
Identification Number : 10.1103/PhysRevC.95.064321
Copyright Disclaimer : ©2017 American Physical Society.
Related URLs :
Depositing User : Symplectic Elements
Date Deposited : 11 May 2017 15:15
Last Modified : 27 Jul 2017 12:30
URI: http://epubs.surrey.ac.uk/id/eprint/814153

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