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Spectroscopy of the proton drip-line nucleus Fr-203

U. Jakobsson S. Juutinen J. Uusitalo M. Leino K. Auranen T. Enqvist P. T. Greenlees K. Hauschild 1 P. Jones R. Julin S. Ketelhut P. Kuusiniemi M. Nyman P. Peura P. Rahkila P. Ruotsalainen J. Saren C. Scholey J. Sorri
1 CSNSM SNO
CSNSM - Centre de Spectrométrie Nucléaire et de Spectrométrie de Masse, CSNSM - Centre de Sciences Nucléaires et de Sciences de la Matière : UMR8609
Abstract : The nucleus Fr-203 has been studied through gamma-ray and electron spectroscopy, using the recoil-decay tagging technique. A 13/2(+) state, with a half-life of 0.37(5) mu s, has been observed in Fr-203. Both the alpha-decay branch and the internal de-excitation of the 1/2(+) isomer in Fr-203 have been studied. Furthermore, the corresponding 1/2(+) state, with a half-life of 0.31(8) s, has been found in At-199. In addition, transitions feeding the 9/2(-) ground state of Fr-203 have been identified. The observed level pattern suggests that the ground state is still spherical.
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Submitted on : Tuesday, August 20, 2013 - 10:27:29 AM
Last modification on : Wednesday, September 16, 2020 - 5:42:41 PM

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U. Jakobsson, S. Juutinen, J. Uusitalo, M. Leino, K. Auranen, et al.. Spectroscopy of the proton drip-line nucleus Fr-203. Physical Review C, American Physical Society, 2013, 87, pp.054320. ⟨10.1103/PhysRevC.87.054320⟩. ⟨in2p3-00852165⟩

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