Half-life and excitation energy of the Iπ=13/2+ isomer in Ra209

K. Hauschild et al.
Phys. Rev. C 77, 047305 – Published 29 April 2008; Erratum Phys. Rev. C 79, 019902 (2009)

Abstract

An isomeric state in Ra209 has been observed for the first time, using the GABRIELA setup at the focal plane of VASSILISSA, to decay to the ground state of Ra209 via a cascade of 238-keV (M2) and 644-keV transitions. The half-life of the isomer has been measured to be 117(5)μs and from systematics is assigned as a neutron i13/21 excitation.

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  • Received 29 January 2008

DOI:https://doi.org/10.1103/PhysRevC.77.047305

©2008 American Physical Society

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Vol. 77, Iss. 4 — April 2008

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