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High-K, t$_{1/2}$ = 1.4(1) ms, isomeric state in $^{255}$Lr

Abstract : isomeric state in 255Lr with a half-life of t1/2 = 1.4(1) ms and Ex>720-keV has been observed for the first time using the GABRIELA setup at the focal plane of the VASSILISSA separator. Based on its K-forbiddeness, the configuration of the state is most probably formed by coupling the valence proton to a two quasiparticle neutron excitation. Possible three quasiparticle configurations are discussed.
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Submitted on : Friday, September 5, 2008 - 10:15:51 AM
Last modification on : Wednesday, September 16, 2020 - 4:06:42 PM




K. Hauschild, A. Lopez-Martens, A. V. Yeremin, O. Dorvaux, S. Antalic, et al.. High-K, t$_{1/2}$ = 1.4(1) ms, isomeric state in $^{255}$Lr. Physical Review C, American Physical Society, 2008, 78, pp.021302-4. ⟨10.1103/PhysRevC.78.021302⟩. ⟨in2p3-00318833⟩



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