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., Grahn, T., Greenlees, P.T., Henrich, C., Herzáň, A., . . . Uusitalo, J. (2019). Lifetime measurements of excited states in 163W and the implications for the anomalous B(E2) ratios in transitional nuclei. Physics Letters B, 798, Article 134998-. https://doi.org/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

DOI: https://doi.org/10.1016/j.physletb.2019.134998

Publication open access: Openly available

Publication channel open access: 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.

Keywords: nuclear physics; spectroscopy

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

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Ministry reporting: Yes

VIRTA submission year: 2019

JUFO rating: 2