Identification of excited states in 107,52Te55

Abstract
Excited states in the extremely neutron-deficient nucleus 107Te have been identified from two separate experiments using the recoil-decay tagging technique. Two connected structures were observed on the basis of γγ-coincidence relations and tentatively assigned as built on the mixed-parentage νg7/2d5/2 and νh11/2 intruder configurations. The observed structures were compared with large-scale shell-model calculations and total Routhian surface calculations. Collective behavior was discovered to persist in the νh11/2 band of 107Te which highlights the shape-polarizing effect of a single valence neutron occupying the h11/2 intruder orbit as the N=50 shell closure is approached.
Language
English
Published in
Physical Review C
Citation
  • Zhang, W., Cederwall, B., Qi, C., Ertoprak, A., Aktas, Ö., Liu, X., Andgren, K., Auranen, K., Bäck, T., Barber, L., Beeton, G., Cullen, D. M., Darby, I. G., Dimmock, M. R., Eeckhaudt, S., Ganioğlu, E., Górska, M., Grahn, T., Greenlees, P. T., . . . Wyss, R. (2021). Identification of excited states in 107,52Te55. Physical Review C, 104(6), Article 064305. https://doi.org/10.1103/PhysRevC.104.064305
License
CC BY 4.0Open Access
Additional information about funding
This work was supported by the Swedish Research Council under Grant No. 2019-04880; the United Kingdom Science and Technology Facilities Council (STFC) under Grants No. ST/L005727/1 and No. ST/P003885/1; the EU 7th Framework Programme, Integrating Activities Transnational Access, Project No. 262010 ENSAR; and the Academy of Finland under the Finnish Centre of Excellence Programme (Nuclear and Accelerator Based Physics Programme at JYFL). W.Z. acknowledges support from the China Scholarship Council under Grant No. 201700260239. The authors acknowledge the support of the GAMMAPOOL for the JUROGAM detectors.
Copyright© Authors, 2021

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