Lifetime measurements in 166Re : Collective versus magnetic rotation
Li, H. J., Cederwall, B., Doncel, M., Peng, J., Chen, Q. B., Zhang, S. Q., Zhao, P. W., Meng, J., Bäck, T., Jakobsson, U., Auranen, K., Bönig, S., Drummond, M., Grahn, T., Greenlees, P., Herzan, A., Joss, D. T., Julin, R., Juutinen, S., . . . Xiao, Z. G. (2016). Lifetime measurements in 166Re : Collective versus magnetic rotation. Physical Review C, 93(3), Article 034309. https://doi.org/10.1103/PhysRevC.93.034309
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Physical Review CDate
2016Copyright
© 2016 American Physical Society. Published in this repository with the kind permission of the publisher.
Lifetimes of excited states in the neutron-deficient odd-odd nucleus 166Re have been measured for the first
time using the recoil distance Doppler-shift method. The measured lifetime for the (8−) state; τ = 480 (80) ps,
enabled an assessment of the multipolarities of the γ rays depopulating this state. Information on electromagnetic
transition strengths were deduced for the γ -ray transitions from the (9−), (10−), and (11−) states, and in the case
of the (10−) and (11−) states limits on the B(M1) and B(E2) strengths were estimated. The results are compared
with total Routhian surface predictions and semiclassical calculations. Tilted-axis cranking calculations based
on a relativistic mean-field approach (TAC-RMF) have also been performed in order to test the possibility of
magnetic rotation in the 166Re nucleus. While the TAC-RMF calculations predict a quadrupole-deformed nuclear
shape with similar β2 deformation as obtained by using the TRS model, it was found that the experimental
electromagnetic transition rates are in better agreement with a collective-rotational description.
...
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American Physical SocietyISSN Search the Publication Forum
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