For certain combinations of protons and neutrons there is a theoretical expectation that the shape of nuclei can assume octupole deformation, which would give rise to reflection asymmetry or a ”pear-shape” in the intrinsic frame, either dynamically (octupole vibrations) or statically (permanent octupole deformation). I will briefly review the historic evidence for reflection asymmetry in nuclei and describe how recent experiments carried out at REX-ISOLDE have constrained nuclear theory and how they contribute to tests of extensions of the Standard Model. I will also discuss future prospects for measuring nuclear shapes from Coulomb Excitation: experiments are being planned that will exploit beams from HIE-ISOLDE that are cooled in the TSR storage ring and injected into a solenoidal spectrometer similar to the HELIOS device developed at the Argonne National Laboratory.
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Research Article| July 07 2016
Studies of the shapes of heavy pear-shaped nuclei at ISOLDE
AIP Conf. Proc. 1753, 030002 (2016)
P. A. Butler; Studies of the shapes of heavy pear-shaped nuclei at ISOLDE. AIP Conf. Proc. 7 July 2016; 1753 (1): 030002. https://doi.org/10.1063/1.4955343
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