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Recoil-decay tagging study of 205Fr
Jakobsson U., Uusitalo J., Juutinen S., Leino M., Enqvist T. et al
Physical Review C 85 (2012) 014309 - http://hal.in2p3.fr/in2p3-00761205
Physique/Physique Nucléaire Expérimentale
Recoil-decay tagging study of 205Fr
U. Jakobsson, J. Uusitalo, S. Juutinen, M. Leino, T. Enqvist, P. T. Greenlee, K. Hauschild1, P. Jones, R. Julin, S. Ketelhut, P. Kuusiniemi, M. Nyman, P. Peura, P. Rahkila, P. Ruotsalainen, J. Sarén, C. Scholey, J. Sorri
1 :  CSNSM - Centre de Spectrométrie Nucléaire et de Spectrométrie de Masse
CNRS : UMR8609 – IN2P3 – Université Paris XI - Paris Sud
batiments 104 et 108 - 91405 Orsay Campus
The nucleus 205Fr has been studied through γ-ray and electron spectroscopy using the recoil-decay tagging technique. The resulting level scheme presents a spherical structure built on the 9/2− ground state and a rotational structure on top of a short-lived isomer. The isomer, with a spin and parity of 13/2+ and a half-life of 80(20) ns, de-excites by an M2 transition directly to the 9/2− ground state. Another, longer-lived, isomer, with a half-life of 1.15(4) ms, has also been found and assigned a spin and parity of 1/2+. Transitions populating and de-exciting this isomer have been observed as well.

Articles dans des revues avec comité de lecture
Physical Review C (Phys. Rev. C)
Publisher American Physical Society
ISSN 0556-2813 (eISSN : 1089-490X)

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