Article Dans Une Revue The European physical journal. A, Hadrons and Nuclei Année : 2008

Lifetime measurement of the six-quasiparticle isomer in 140Nd and evidence for an isomer above the 19/2+ state in 139Nd

Résumé

The lifetime of the recently discovered six-quasiparticle (6-qp) isomer in 140Nd has been measured using the 126Te(18O, 4n) reaction and the pulsed-beam technique at the Institut de Physique Nucléaire (IPN) Orsay. The deduced lifetime of the 6-qp isomer in 140Nd of 1.23(7)μs supports the 20+ spin-parity assignment to the isomeric state which is based on a spherical configuration that coexists with the triaxial bands observed in this spin range. Evidence for delayed components for the transitions below the 19/2+ state in 139Nd was observed, with an apparent half-life of 272(4)ns

Dates et versions

in2p3-00273558 , version 1 (15-04-2008)

Identifiants

Citer

M. Ferraton, R. Bourgain, C. M. Petrache, D. Verney, F. Ibrahim, et al.. Lifetime measurement of the six-quasiparticle isomer in 140Nd and evidence for an isomer above the 19/2+ state in 139Nd. The European physical journal. A, Hadrons and Nuclei, 2008, 35, pp.167-170. ⟨10.1140/epja/i2007-10534-y⟩. ⟨in2p3-00273558⟩
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