Neutron excitations in 119Ba
Zheng, K.K., Petrache, C. M., Zhang, Z. H., Astier, A., Lv B., F., Greenlees, P. T., Grahn, T., Julin, R., Juutinen, S., Luoma, M., Ojala, J., Pakarinen, J., Partanen, J., Rahkila, P., Ruotsalainen, P., Sandzelius, M., Sarén, J., Tann, H., Uusitalo, J., . . . Page, R. D. (2021). Neutron excitations in 119Ba. Physical Review C, 104(1), Article 014326. https://doi.org/10.1103/PhysRevC.104.014326
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Physical Review CDate
2021Copyright
© 2021 American Physical Society
The neutron-deficient 119Ba nucleus has been studied using the 58Ni(64Zn,2pn) reaction and the JUROGAM 3 γ-ray detector array coupled to the MARA recoil-mass separator setup. One new rotational band and several low-lying states are newly identified. A half-life of T1/2=0.36(2)μs has been measured for the 5/2− bandhead of the νh11/2 band. The two previously known rotational bands are confirmed, except for the higher part of the +1/2 signature partner of the positive-parity band. Configurations are assigned based on the analysis of the observed quasiparticle alignments whose nature is unveiled by the calculations using the particle number conserving cranked shell model.
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This work has been supported by the China Scholarship Council (CSC), CSC No. 201804910386. This work has been supported by the Academy of Finland under the Finnish Centre of Excellence Programme (2012-2017), by the EU 7th Framework Programme Project No. 262010 (ENSAR), by the United Kingdom Science and Technology Facilities Council, by the National Research, Development and Innovation Fund of Hun ...
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