A1 Journal article (refereed)
Lifetime measurements of excited states in 163W and the implications for the anomalous B(E2) ratios in transitional nuclei (2019)


Lewis, M.C.; Joss, D.T.; Sayğı, B.; Page, R.D.; Cullen, D.M.; Barber, L.; Giles, M.M.; Simpson, J.; Al-Aqeel, M.A.M.; Badran, H.; Braunroth, T.; Briscoe, A.D.; Calverley, T.; Dewald, A.; Doncel, M. et al. (2019). Lifetime measurements of excited states in 163W and the implications for the anomalous B(E2) ratios in transitional nuclei. Physics Letters B, 798, 134998-. DOI: 10.1016/j.physletb.2019.134998


JYU authors or editors


Publication details

All authors or editors: Lewis, M.C.; Joss, D.T.; Sayğı, B.; Page, R.D.; Cullen, D.M.; Barber, L.; Giles, M.M.; Simpson, J.; Al-Aqeel, M.A.M.; Badran, H.; et al.
Journal or series: Physics Letters B
ISSN: 0370-2693
eISSN: 1873-2445
Publication year: 2019
Volume: 798
Article number: 134998-
Publisher: Elsevier
Publication country: Netherlands
Publication language: English
Open Access: Publication published in an open access channel
Publication is parallel published (JYX): https://jyx.jyu.fi/handle/123456789/65946


Abstract

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.

Free keywords: mean lifetimes; B(E2) reduced transition probabilities; Recoil-distance Doppler-shift method; nuclear deformation; gamma-ray spectroscopy


Contributing organizations


Related projects

ENSAR2 European Nuclear Science and Application Research 2
Jokinen, Ari
European Commission
01/03/2016-31/08/2020

Ministry reporting: Yes
Preliminary JUFO rating: 2

Last updated on 2019-18-10 at 11:35