Identification of Excited States in ^140Dy

Details Identification of Excited States in ^140Dy Identification of Excited States in ^140Dy

Apr 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002aps..apre10003c&link_type=abstract

American Physical Society, April Meeting, Jointly Sponsored with the High Energy Astrophysics Division (HEAD) of the American As

Astronomy and Astrophysics

Astrophysics

Scientific paper

Excited structures in the proton-rich nucleus ^140Dy have been established following the decay of an 8^- isomer. The excitation energy of the isomer is established to be 2.16 MeV with a half-life of 7.3±1.5 μs. The isomer decays into the yrast line at the 8^+ state, revealing a rotational band with a deduced deformation of β2 = 0.24(3). The isotope ^140Dy is the daughter of the deformed proton emitter ^141Ho. The new information obtained here supports the role of deformation in proton emission and the previous assignments of single-particle configurations to the two proton emitting states in ^141Ho. In addition, the reduced hindrance factor measured for the isomer is consistent with the trend observed in the N=74 isotones.

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