Themixed symmetry 2+ states in theN = 84 isotones 142Ce and 144Nd are investigatedwithin the quasiparticlephonon model, with special attention to theirM1 decay to the lowest symmetric 2+ state. The observed pronounced splitting of the M1 strength is shown to be caused by the phonon coupling, made quite effective by the peculiar shell structure of the two-valence neutrons above the N = 82 shell closure.

Splitting of the 2+ mixed symmetry mode in the proximity of the N=82 ishell closure

LO IUDICE, NICOLA;
2009

Abstract

Themixed symmetry 2+ states in theN = 84 isotones 142Ce and 144Nd are investigatedwithin the quasiparticlephonon model, with special attention to theirM1 decay to the lowest symmetric 2+ state. The observed pronounced splitting of the M1 strength is shown to be caused by the phonon coupling, made quite effective by the peculiar shell structure of the two-valence neutrons above the N = 82 shell closure.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11588/365633
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