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; Stoyanov, C. h.; N., Pietralla. - In: PHYSICAL REVIEW. C, NUCLEAR PHYSICS. - ISSN 0556-2813. - STAMPA. - 80:(2009), pp. 24311-24315. [10.1103/PhysRevC.80.024311]
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.| File | Dimensione | Formato | |
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