@article{5ea72350ea77479e85c82f4981c33f1b,
title = "Quadrupole and octupole collectivity in Ba 143",
abstract = "The neutron-rich barium nuclei have been the subject of intense interest due to the enhanced octupole correlations they are predicted to exhibit. The observation of enhanced octupole collectivity in Ba144,146 as measured in sub-barrier Coulomb excitation, consistent with static octupole deformation, has further heightened this interest. In the present work, these studies are extended to the neighboring odd-mass Ba143 to investigate the interplay between single-particle and collective octupole degrees of freedom. A new measurement of the first 92 - state lifetime is also presented. Reflection-Asymmetric Triaxial Particle Rotor Model calculations indicate that the negative-parity bands in Ba143 can be understood as a decoupled structure of νh9/2 parentage, while the positive-parity bands are built on a decoupled octupole phonon. No evidence for E3 excitation is observed in this work, but an upper limit is placed on the E3 matrix element to the lowest octupole band.",
author = "C. Morse and MacChiavelli, \{A. O.\} and Crawford, \{H. L.\} and S. Zhu and Wu, \{C. Y.\} and Wang, \{Y. Y.\} and J. Meng and Back, \{B. B.\} and B. Bucher and Campbell, \{C. M.\} and Carpenter, \{M. P.\} and J. Chen and Clark, \{R. M.\} and M. Cromaz and P. Fallon and J. Henderson and Janssens, \{R. V.F.\} and Jones, \{M. D.\} and Khoo, \{T. L.\} and Kondev, \{F. G.\} and T. Lauritsen and Lee, \{I. Y.\} and J. Li and D. Potterveld and C. Santamaria and G. Savard and D. Seweryniak and S. Stolze and D. Weisshaar",
note = "Funding Information: The authors thank the ATLAS operations staff at ANL for their hard work in providing us with the radioactive beam. We also acknowledge enlightening discussions with L. P. Gaffney, P. A. Butler, and S. Frauendorf. This material is based on work supported by the U.S. Department of Energy, Office of Science, Office of Nuclear Physics under Contracts No. DE-AC02-05CH11231 (LBNL), No. DE-AC02-06CH11357 (ANL), and No. DE-AC02-98CH10886 (BNL) and Grants No. DE-FG02-97ER41041 (UNC) and No. DE-FG02-97ER41033 (TUNL). GRETINA was funded by the U.S. DOE, Office of Science, Office of Nuclear Physics, and operated by the ANL contract number above and by Contract No. DE-AC02-05CH11231 (LBNL). Work at LLNL was performed under DOE Contract No. DE-AC52-07NA27344, and at INL under Contract No. DE-AC07-05ID14517. Y.Y.W. and J.M. acknowledge the support of the National Natural Science Foundation of China (Grants No. 11875075, No. 11935003, No. 11975031, and No. 11621131001), the National Key R\&D Program of China (Contracts No. 2018YFA0404400 and No. 2017YFE0116700), the State Key Laboratory of Nuclear Physics and Technology, Peking University (No. NPT2020ZZ01), and the China Postdoctoral Science Foundation under Grant No. 2020M670014. This research used resources of the ATLAS facility at ANL, which is a DOE Office of Science User Facility. Publisher Copyright: {\textcopyright} 2020 American Physical Society. ",
year = "2020",
month = nov,
day = "25",
doi = "10.1103/PhysRevC.102.054328",
language = "English",
volume = "102",
journal = "Physical Review C",
issn = "2469-9985",
publisher = "American Physical Society",
number = "5",
}