The nucleus Lu-163 has been populated through the fusion-evaporation reaction La-139(Si-29,5n)Lu-163 with a beam energy of 152 MeV. The electromagnetic properties of several connecting transitions between two presumably triaxial, strongly deformed (TSD) bands have been studied. Evidence is presented for the assignment of the excited TSD band as a wobbling mode built on the yrast TSD band, based on comparisons to new calculations in which an aligned particle is coupled to a strongly deformed triaxial rotor. The wobbling mode is uniquely related to triaxiality in nuclei.
Evidence for the wobbling mode in nuclei / G.B. Hagemann, D.R. Jensen, M. Bergstrom, B. Herskind, G. Sletten, S. Tormanen, J.N. Wilson, P.O. Tjom, I. Hamamoto, K. Spohr, H. Hubel, A. Gorgen, G. Schonwasser, A. Bracco, S. Leoni, A. Maj, D. Curien, S.W. Odegard, C.M. Petrache, P. Bednarczyk. - In: PHYSICAL REVIEW LETTERS. - ISSN 0031-9007. - 86:26(2001), pp. 5866-5869. [10.1103/PhysRevLett.86.5866]
Evidence for the wobbling mode in nuclei
A. Bracco;S. Leoni;
2001
Abstract
The nucleus Lu-163 has been populated through the fusion-evaporation reaction La-139(Si-29,5n)Lu-163 with a beam energy of 152 MeV. The electromagnetic properties of several connecting transitions between two presumably triaxial, strongly deformed (TSD) bands have been studied. Evidence is presented for the assignment of the excited TSD band as a wobbling mode built on the yrast TSD band, based on comparisons to new calculations in which an aligned particle is coupled to a strongly deformed triaxial rotor. The wobbling mode is uniquely related to triaxiality in nuclei.
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