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Title: Signature for rotational to vibrational evolution along the yrast line

Abstract

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.

Authors:
 [1];  [2]; ;  [3]; ;  [1];  [4]
  1. School of Physics and MOE Laboratory of Heavy Ion Physics, Peking University, Beijing 100871 (China)
  2. (China)
  3. School of Nuclear Engineering and Technology, East China Institute of Technology, Fuzhou 344000, Jiangxi (China)
  4. Department of Physics, North University of China, Taiyuan 030051 (China)
Publication Date:
OSTI Identifier:
20995246
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physical Review. C, Nuclear Physics; Journal Volume: 75; Journal Issue: 4; Other Information: DOI: 10.1103/PhysRevC.75.047304; (c) 2007 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
73 NUCLEAR PHYSICS AND RADIATION PHYSICS; COLLECTIVE MODEL; EXCITATION; GADOLINIUM 156; MASS NUMBER; ROTATION; ROTATIONAL STATES; RUTHENIUM 102; SPIN; VIBRATIONAL STATES; YRAST STATES

Citation Formats

Shen, S. F., School of Nuclear Engineering and Technology, East China Institute of Technology, Fuzhou 344000, Jiangxi, Chen, Y. B., Tang, B., Xu, F. R., Zheng, S. J., and Wen, T. D. Signature for rotational to vibrational evolution along the yrast line. United States: N. p., 2007. Web. doi:10.1103/PHYSREVC.75.047304.
Shen, S. F., School of Nuclear Engineering and Technology, East China Institute of Technology, Fuzhou 344000, Jiangxi, Chen, Y. B., Tang, B., Xu, F. R., Zheng, S. J., & Wen, T. D. Signature for rotational to vibrational evolution along the yrast line. United States. doi:10.1103/PHYSREVC.75.047304.
Shen, S. F., School of Nuclear Engineering and Technology, East China Institute of Technology, Fuzhou 344000, Jiangxi, Chen, Y. B., Tang, B., Xu, F. R., Zheng, S. J., and Wen, T. D. Sun . "Signature for rotational to vibrational evolution along the yrast line". United States. doi:10.1103/PHYSREVC.75.047304.
@article{osti_20995246,
title = {Signature for rotational to vibrational evolution along the yrast line},
author = {Shen, S. F. and School of Nuclear Engineering and Technology, East China Institute of Technology, Fuzhou 344000, Jiangxi and Chen, Y. B. and Tang, B. and Xu, F. R. and Zheng, S. J. and Wen, T. D.},
abstractNote = {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.},
doi = {10.1103/PHYSREVC.75.047304},
journal = {Physical Review. C, Nuclear Physics},
number = 4,
volume = 75,
place = {United States},
year = {Sun Apr 15 00:00:00 EDT 2007},
month = {Sun Apr 15 00:00:00 EDT 2007}
}