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Journal Articles Physical Review C Year : 2012

Recoil-decay tagging study of 205Fr

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U. Jakobsson
  • Function : Author
J. Uusitalo
  • Function : Author
S. Juutinen
  • Function : Author
M. Leino
  • Function : Author
T. Enqvist
  • Function : Author
P. T. Greenlee
  • Function : Author
K. Hauschild
P. Jones
  • Function : Author
R. Julin
  • Function : Author
S. Ketelhut
  • Function : Author
P. Kuusiniemi
  • Function : Author
M. Nyman
  • Function : Author
P. Peura
  • Function : Author
P. Rahkila
  • Function : Author
P. Ruotsalainen
J. Sarén
  • Function : Author
C. Scholey
  • Function : Author
J. Sorri
  • Function : Author

Abstract

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.

Dates and versions

in2p3-00761205 , version 1 (05-12-2012)

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U. Jakobsson, J. Uusitalo, S. Juutinen, M. Leino, T. Enqvist, et al.. Recoil-decay tagging study of 205Fr. Physical Review C, 2012, 85, pp.014309. ⟨10.1103/PhysRevC.85.014309⟩. ⟨in2p3-00761205⟩
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