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

Autor: J. F. Clavelin, L. Sagui, S. Franchoo, N. de Séréville, M. Ferraton, M. Lebois, C. Phan Viet, M. Vilmay, C. M. Petrache, I. Stefan, D. Verney, R. Bourgain, F. Ibrahim
Přispěvatelé: Institut de Physique Nucléaire d'Orsay (IPNO), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11)
Jazyk: angličtina
Rok vydání: 2008
Předmět:
Zdroj: European Physical Journal A
European Physical Journal A, EDP Sciences, 2008, 35, pp.167-170. ⟨10.1140/epja/i2007-10534-y⟩
ISSN: 1434-6001
1434-601X
DOI: 10.1140/epja/i2007-10534-y⟩
Popis: 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 Nucleaire (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.
Databáze: OpenAIRE
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