Evidence for Second-Phonon Nuclear Wobbling
2002; American Physical Society; Volume: 89; Issue: 14 Linguagem: Inglês
10.1103/physrevlett.89.142503
ISSN1092-0145
AutoresDavid R. Jensen, G.B. Hagemann, I. Hamamoto, S. W. O̸degård, B. Herskind, G. Sletten, J. N. Wilson, K. Spohr, H. Hübel, P. Bringel, A. Neußer, G. Schönwaßer, A. K. Singh, W. C., H. Amro, A. Bracco, S. Leoni, G. Benzoni, A. Maj, C. M. Petrache, G. Bianco, P. Bednarczyk, D. Curien,
Tópico(s)Quantum Chromodynamics and Particle Interactions
ResumoThe nucleus 163Lu has been populated through the reaction 139La(29Si,5n) with a beam energy of 157 MeV. Three triaxial, strongly deformed (TSD) bands have been observed with very similar rotational properties. The first excited TSD band has earlier been assigned as a one-phonon wobbling excitation built on the lowest-lying (yrast) TSD band. The large B(E2)(out)/B(E2)(in) value obtainable for one of four observed transitions between the second and first excited TSD bands is in good agreement with particle-rotor calculations for a two-phonon wobbling excitation.
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