Journal article

Publication year: 2012

Journal: Physical Review C

Volume number: 85

Issue number: 3

ISSN: 0556-2813

eISSN: 1089-490X

Open access status: Green

DOI Link: https://doi.org/10.1103/PhysRevC.85.034306

Publisher: American Physical Society

Abstract: 
A model assuming coherent quadrupole-octupole vibrations and rotations is applied to describe non-yrast energy sequences with alternating parity in several even-even nuclei from different regions, namely, Sm-152,Sm-154, Gd-154,Gd-156,Gd-158, U-236, and Mo-100. Within the model scheme, the yrast alternating-parity band is composed by the members of the ground-state band and the lowest negative-parity levels with odd angular momenta. The non-yrast alternating-parity sequences unite levels of beta bands with higher negative-parity levels. The model description reproduces the structure of the considered alternating-parity spectra together with the observed B(E1), B(E2), and B(E3) transition probabilities within and between the different level sequences. B(E1) and B(E3) reduced probabilities for transitions connecting states with opposite parity in the non-yrast alternating-parity bands are predicted. The implemented study outlines the limits of the considered band-coupling scheme and provides estimations about the collective energy potential, which governs the quadrupole-octupole properties of the considered nuclei.

Harvard Citation style: Minkov, N., Drenska, S., Strecker, M., Scheid, W. and Lenske, H. (2012) Non-yrast nuclear spectra in a model of coherent quadrupole-octupole motion, Physical Review C, 85(3), Article 034306. https://doi.org/10.1103/PhysRevC.85.034306

APA Citation style: Minkov, N., Drenska, S., Strecker, M., Scheid, W., & Lenske, H. (2012). Non-yrast nuclear spectra in a model of coherent quadrupole-octupole motion. Physical Review C. 85(3), Article 034306. https://doi.org/10.1103/PhysRevC.85.034306