Recoil-decay tagging study of 205Fr
Jakobsson, U., Uusitalo, J., Juutinen, S., Leino, M., Enqvist, T., Greenlees, P., Hauschild, K., Jones, P., Julin, R., Ketelhut, S., Kuusiniemi, P., Nyman, M., Peura, P., Rahkila, P., Ruotsalainen, P., Sarén, J., Scholey, C., & Sorri, J. (2012). Recoil-decay tagging study of 205Fr. Physical Review C, 85(1), Article 014309. https://doi.org/10.1103/PhysRevC.85.014309
Published in
Physical Review CDate
2012Copyright
© 2012 American Physical Society. Published in this repository with the kind permission of the publisher.
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.
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