Lifetime measurements of excited states in <sup>163</sup>W and the implications for the anomalous B(E2) ratios in transitional nuclei



Lewis, MC, Joss, DT ORCID: 0000-0001-5763-8767, Sayğı, B, Page, RD, Cullen, DM, Barber, L, Giles, MM, Simpson, J, Al-Aqeel, MAM, Badran, H
et al (show 33 more authors) (2019) Lifetime measurements of excited states in <sup>163</sup>W and the implications for the anomalous B(E2) ratios in transitional nuclei. Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 798.

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Abstract

© 2019 The Authors This letter reports lifetime measurements of excited states in the odd-N nucleus 163W using the recoil-distance Doppler shift method to probe the core polarising effect of the i13/2 neutron orbital on the underlying soft triaxial even-even core. The ratio B(E2:21/2+→17/2+)/B(E2:17/2+→13/2+) is consistent with the predictions of the collective rotational model. The deduced B(E2) values provide insights into the validity of collective model predictions for heavy transitional nuclei and a geometric origin for the anomalous B(E2) ratios observed in nearby even-even nuclei is proposed.

Item Type: Article
Uncontrolled Keywords: mean lifetimes, B(E2) reduced transition probabilities, recoil-distance Doppler-shift method, nuclear deformation, gamma-ray spectroscopy
Depositing User: Symplectic Admin
Date Deposited: 29 Oct 2019 11:52
Last Modified: 16 Aug 2021 19:11
DOI: 10.1016/j.physletb.2019.134998
Related URLs:
URI: https://livrepository.liverpool.ac.uk/id/eprint/3059849