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Evidence for second-phonon nuclear wobbling |
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| Authors: | Jensen D R Hagemann G B Hamamoto I Ødegård S W Herskind B Sletten G Wilson J N Spohr K Hübel H Bringel P Neusser A Schönwasser G Singh A K Ma W C Amro H Bracco A Leoni S Benzoni G Maj A Petrache C M Bianco G Lo Bednarczyk P Curien D |
| Institution: | The Niels Bohr Institute, Blegdamsvej 17, DK-2100 Copenhagen ?, Denmark. |
| Abstract: | The 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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