Bulletin of the American Physical Society
APS April Meeting 2019
Volume 64, Number 3
Saturday–Tuesday, April 13–16, 2019; Denver, Colorado
Session G13: Nuclear Structure
8:30 AM–10:18 AM,
Sunday, April 14, 2019
Sheraton
Room: Plaza Court 2
Sponsoring
Unit:
DNP
Chair: Alexandra Gade, Michigan State University/ NSCL
Abstract: G13.00006 : A new frontier: neutron-shell structure below Pb along N=127 isotone via the 206Hg(d,p) reaction.*
9:30 AM–9:42 AM
View Presentation Abstract
Presenter:
Tsz Leung Tang
(Argonne National Laboratory)
Authors:
Tsz Leung Tang
(Argonne National Laboratory)
Benjamin P Kay
(Argonne National Laboratory)
Calem R Hoffman
(Argonne National Laboratory)
David Sharp
(University of Manchester)
Gaffney Liam
(CERN)
Peter A. Butler
(University of Liverpool)
Wilton N. Catford
(University of Surrey)
Giacomo de Angelis
(INFN)
Freddy Flavigny
(IPN)
Sean John Freeman
(University of Manchester)
Eleonora T. Gregor
(INFN)
Joonas Konki
(CERN)
Marc Labiche
(STFC Daresbury Laboratory, STFC Daresbury Laboratory)
Patrick T. MacGregor
(University of Manchester)
Ismael Martel-Bravo
(University of Liverpool)
Robert D. Page
(University of Liverpool)
Zsolt Podolyak
(University of Surrey)
Oleksii Poleshchuk
(KU Leuven)
Riccardo Raabe
(KU Leuven)
Alex A. Raj
(KU Leuven)
Francesco Recchia
(University of Padova)
John P Schiffer
(Argonne National Laboratory)
John F. Smith
(University of the West of Scotland)
Stuart V. Szwec
(University of Jyväskylä)
Jiecheng Yang
(KU Leuven)
The single-particle structure of the N=127 isotones below 209Pb has hitherto remained unexplored. In a first exploration of this region, single-neutron excitations in 207Hg have been measured via 206Hg(d,p) reaction in inverse kinematics. The 206Hg beam was produced at the ISOLDE facility at an energy of 7.4 MeV/u. The energy and position of outgoing protons were measured by the new ISOLDE Solenoidal Spectrometer (ISS) at a field of 2.5 T. Seven states have observed in 207Hg. Angular distributions suggest that these states are carry components of the 0g9/2, 2d5/2, 3s1/2, 2d3/2 and 0g7/2 strength. Aside from the 2d5/2 strength, which is strongly fragmented, the states represent close to the total single-neutron strength for each orbital.
*This work was supported by the U.S. Department of Energy, Office of Science, Office of Nuclear Physics, under Contract Number DE-AC02-06CH11357 (ANL), the UK Science and Technology Facilities Council, and the European Union's Horizon 2020 Framework research and innovation program under grant agreement no. 654002 (ENSAR2).
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