Signature for rotational to vibrational evolution along the yrast line
- School of Physics and MOE Laboratory of Heavy Ion Physics, Peking University, Beijing 100871 (China)
- School of Nuclear Engineering and Technology, East China Institute of Technology, Fuzhou 344000, Jiangxi (China)
- Department of Physics, North University of China, Taiyuan 030051 (China)
The excitation spectra of nuclei in the regions 150<A<190 and 220<A<250 are commonly considered as showing characteristics of the rotational motion. In the present work, however, there is evidence indicating that the nuclei can evolve from rotation to vibration. We have used two simple models to discuss the collective motions of a nucleus for different spin ranges. In addition, in order to get the insight into the rotational-like properties of nuclei, as an example, shape calculations using the total Routhian surfaces (TRS) model have been carried out for positive-parity states in {sup 156}Gd. Also we have shown the result of the nucleus {sup 102}Ru which is given as an example of the reverse transition, i.e., vibration to rotation. The TRS plots reveal that, with increasing spin, the former nucleus becomes slightly soft in {gamma} and {beta} deformations, while the latter one becomes rigid in the {gamma} deformation.
- OSTI ID:
- 20995246
- Journal Information:
- Physical Review. C, Nuclear Physics, Vol. 75, Issue 4; Other Information: DOI: 10.1103/PhysRevC.75.047304; (c) 2007 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0556-2813
- Country of Publication:
- United States
- Language:
- English
Similar Records
Fragmentation of two-phonon {gamma}-vibrational strength in deformed nuclei
Vibrational and rotational sequences in 101Mo and 103,4Ru studied via multinucleon transfer reactions