A1 Journal article (refereed)
Isomeric 13/2+ state in 201Fr (2020)


Auranen, K.; Jakobsson, U.; Badran, H.; Grahn, T.; Greenlees, P. T.; Herzán, A.; Julin, R.; Juutinen, S.; Konki, J.; Leino, M.; Leppänen, A.-P.; O'Neill, G.; Pakarinen, J.; Papadakis, P. et al. (2020). Isomeric 13/2+ state in 201Fr. Physical Review C, 101 (2), 024306. DOI: 10.1103/PhysRevC.101.024306


JYU authors or editors


Publication details

All authors or editors: Auranen, K.; Jakobsson, U.; Badran, H.; Grahn, T.; Greenlees, P. T.; Herzán, A.; Julin, R.; Juutinen, S.; Konki, J.; Leino, M.; et al.

Journal or series: Physical Review C

ISSN: 2469-9985

eISSN: 2469-9993

Publication year: 2020

Volume: 101

Issue number: 2

Article number: 024306

Publisher: American Physical Society

Publication country: United States

Publication language: English

DOI: http://doi.org/10.1103/PhysRevC.101.024306

Open Access: Publication channel is not openly available

Publication is parallel published (JYX): https://jyx.jyu.fi/handle/123456789/67911


Abstract

We have identified an isomeric state in 201Fr for which we propose a spin and parity of 13/2 +, and interpret it as arising from the π(i13/2 ) configuration. A half-life of 720(40) ns was measured, corresponding to B(M2) = 0.17(2) W.u., in good agreement with those of other 13/2 + → 9/2 − [π(i13/2 ) → π(h9/2 )] transitions observed in other nuclei in the region. The nuclei of interest were produced in a fusion-evaporation reaction and their decay properties were investigated using the GREAT spectrometer at the focal plane of the RITU gas-filled recoil separator.


Keywords: nuclear physics

Free keywords: alpha decay; energy levels and level densities; isomer decays; lifetimes and widths; nuclear spin and parity; nuclear structure and decays


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Ministry reporting: Yes

Reporting Year: 2020

Preliminary JUFO rating: 2


Last updated on 2020-18-08 at 13:32