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: G13.00005 : Sub-Barrier Coulomb excitation of 106Cd with the JANUS setup at ReA3*
9:18 AM–9:30 AM
View Presentation
Abstract
Presenter:
Daniel M Rhodes
(National Superconducting Cyclotron Laboratory, Michigan State University)
Authors:
Daniel M Rhodes
(National Superconducting Cyclotron Laboratory, Michigan State University)
Alexandra Gade
(Michigan State University, National Superconducting Cyclotron Laboratory)
John Ash
(National Superconducting Cyclotron Laboratory, Michigan State University)
Peter C Bender
(University of Massachusetts Lowell)
Robert M Elder
(National Superconducting Cyclotron Laboratory, Michigan State University)
Brandon Elman
(Michigan State University, National Superconducting Cyclotron Laboratory)
Jack Henderson
(Lawrence Livermore National Lab)
Mara Grinder
(National Superconducting Cyclotron Laboratory, Michigan State University)
Hironori Iwasaki
(National Superconducting Cyclotron Laboratory, Michigan State University)
Brenden Longfellow
(National Superconducting Cyclotron Laboratory, Michigan State University)
Tea Mijatovic
(National Superconducting Cyclotron Laboratory, Michigan State University)
Mark-Christoph Spieker
(National Superconducting Cyclotron Laboratory, Michigan State University)
Dirk W Weisshaar
(National Superconducting Cyclotron Laboratory)
Ching-Yen Wu
(Lawrence Livermore National Lab)
Describing the evolution of the B(E2;0+→2+) transition strength in Sn isotopes from A=130 to 104 is challenging for shell-model calculations [1], making measures of collectivity near N=Z=50 100Sn quite interesting. We explore collectivity in Z=48, N=58 106Cd via Coulomb Excitation. Experimental results for 106Cd are contradictory: Recent lifetime measurements [2] disagree with NNDC values adopted from a 40 year old Coulomb excitation measurement [3]. B(E2) values derived from [2] disagree with large-scale shell model calculations, questioning the earlier good reproduction of quadrupole collectivity in 106Cd within the shell model.
The results of a Coulomb excitation measurement of 106Cd will be presented. The measurement will clarify collectivity in 106Cd, extend the data to higher-lying states, and add understanding of collectivity towards N=Z=50 100Sn.
[1] V. M. Bader et al., Phys. Rev. C 88, 051301(R) (2013)
[2] N. Benczer-Koller et al., Phys. Rev. C 94, 034303 (2016)
[3] M. T. Esat et al., Nucl. Phys. A 274, 237 (1976)
*This work was supported in part by the National Science Foundation under Contract No. PHY-1565546 (NSCL), by the US Department of Energy, Office of Nuclear Physics, under Grant No. DE-FG02-08ER41556 (NSCL) and under contract No. DE-AC52-07NA27344 (LLNL).
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