Isomeric 13/2+ (νi13/2−1) state in 211Th
Auranen, K., Uusitalo, J., Badran, H., Grahn, T., Greenlees, P. T., Herzáň, A., Jakobsson, U., Julin, R., Juutinen, S., Konki, J., Leino, M., Leppänen, A.-P., O'Neill, G., Pakarinen, J., Papadakis, P., Partanen, J., Peura, P., Rahkila, P., Ruotsalainen, P., . . . Voss, A. (2021). Isomeric 13/2+ (νi13/2−1) state in 211Th. Physical Review C, 103(5), Article 054323. https://doi.org/10.1103/PhysRevC.103.054323
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Physical Review CDate
2021Discipline
FysiikkaYdin- ja kiihdytinfysiikan huippuyksikköPhysicsCentre of Excellence in Nuclear and Accelerator Based PhysicsCopyright
© 2021 American Physical Society
Using a fusion-evaporation reaction and a gas-filled recoil separator, an isomeric state [T12=83(8)μs] with a most likely spin and parity of 132+ has been identified in Th211. The isomeric state is mainly depopulated via a hindered internal M2 transition [B(M2)=0.0025(5) W.u.], but also a weak α-decay branch of 4(3)% was observed. The present observations fit well to the systematic pattern set by the previously identified states of the same spin and parity in this region of the nuclear chart.
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American Physical Society (APS)ISSN Search the Publication Forum
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Postdoctoral Researcher, AoFAdditional information about funding
This work was supported by the Academy of Finland under the Contracts No. 213503 (Finnish Center of Excellence Programme) and No. 323710 (Personal research project, K.A.). The authors also thank the GAMMAPOOL European Spectroscopy Resource for the loan of the germanium detectors. The contribution of A.H. was supported by the Slovak Research and Development Agency (Contract No. APVV-15-0225), the ...
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