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Title: Nuclear hyperdeformation and the Jacobi shape transition

Abstract

The possibility that atomic nuclei possess stable, extremely elongated (hyperdeformed) shapes at very high angular momentum is investigated in the light of the most recent experimental results. The crucial role of the Jacobi shape transitions for the population of hyperdeformed states is discussed and emphasized. State-of-the-art mean-field calculations including the most recent parametrization of the liquid-drop energy together with thermal effects and minimization algorithms allowing the spanning of a large deformation space predict the existence of a region of hyperdeformed nuclei in the mass A{approx}120-130: Te, Cs, Xe, I, and Ba isotopes. In agreement with predictions presented in reviews by J. Dudek, K. Pomorski, N. Schunck, and N. Dubray [Eur. Phys. J. A 20, 15 (2003)] and J. Dudek, N. Schunck, and N. Dubray [Acta Phys Pol. B 36, 975 (2005)], our extended calculations predict that only very short hyperdeformed bands composed of a dozen discrete transitions at the most are to be expected-in contrast to the results known for the superdeformed bands. We stress the importance of the experimental research in terms of multiple-{gamma} correlation analysis that proved to be very efficient for the superdeformation studies and seems very helpful in the even more difficult search for the discretemore » transitions in hyperdeformed nuclei.« less

Authors:
 [1];  [2];  [3];  [4]
  1. Departamento de Fisica Teorica, Universidad Autonoma de Madrid, 28049 Cantoblanco, Madrid (Spain)
  2. (Denmark)
  3. Institut de Recherches Subatomiques IN2P3-CNRS/Universite Louis Pasteur, F-67037 Strasbourg Cedex 2 (France)
  4. Niels Bohr Institute, University of Copenhagen, DK-2100 Copenhagen (Denmark)
Publication Date:
OSTI Identifier:
20995266
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physical Review. C, Nuclear Physics; Journal Volume: 75; Journal Issue: 5; Other Information: DOI: 10.1103/PhysRevC.75.054304; (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; ANGULAR MOMENTUM; BARIUM ISOTOPES; CESIUM ISOTOPES; IODINE ISOTOPES; MEAN-FIELD THEORY; NUCLEAR DEFORMATION; SHAPE; SUPERDEFORMED NUCLEI; TELLURIUM ISOTOPES; TEMPERATURE DEPENDENCE; XENON ISOTOPES

Citation Formats

Schunck, N., Niels Bohr Institute, University of Copenhagen, DK-2100 Copenhagen, Dudek, J., and Herskind, B. Nuclear hyperdeformation and the Jacobi shape transition. United States: N. p., 2007. Web. doi:10.1103/PHYSREVC.75.054304.
Schunck, N., Niels Bohr Institute, University of Copenhagen, DK-2100 Copenhagen, Dudek, J., & Herskind, B. Nuclear hyperdeformation and the Jacobi shape transition. United States. doi:10.1103/PHYSREVC.75.054304.
Schunck, N., Niels Bohr Institute, University of Copenhagen, DK-2100 Copenhagen, Dudek, J., and Herskind, B. Tue . "Nuclear hyperdeformation and the Jacobi shape transition". United States. doi:10.1103/PHYSREVC.75.054304.
@article{osti_20995266,
title = {Nuclear hyperdeformation and the Jacobi shape transition},
author = {Schunck, N. and Niels Bohr Institute, University of Copenhagen, DK-2100 Copenhagen and Dudek, J. and Herskind, B.},
abstractNote = {The possibility that atomic nuclei possess stable, extremely elongated (hyperdeformed) shapes at very high angular momentum is investigated in the light of the most recent experimental results. The crucial role of the Jacobi shape transitions for the population of hyperdeformed states is discussed and emphasized. State-of-the-art mean-field calculations including the most recent parametrization of the liquid-drop energy together with thermal effects and minimization algorithms allowing the spanning of a large deformation space predict the existence of a region of hyperdeformed nuclei in the mass A{approx}120-130: Te, Cs, Xe, I, and Ba isotopes. In agreement with predictions presented in reviews by J. Dudek, K. Pomorski, N. Schunck, and N. Dubray [Eur. Phys. J. A 20, 15 (2003)] and J. Dudek, N. Schunck, and N. Dubray [Acta Phys Pol. B 36, 975 (2005)], our extended calculations predict that only very short hyperdeformed bands composed of a dozen discrete transitions at the most are to be expected-in contrast to the results known for the superdeformed bands. We stress the importance of the experimental research in terms of multiple-{gamma} correlation analysis that proved to be very efficient for the superdeformation studies and seems very helpful in the even more difficult search for the discrete transitions in hyperdeformed nuclei.},
doi = {10.1103/PHYSREVC.75.054304},
journal = {Physical Review. C, Nuclear Physics},
number = 5,
volume = 75,
place = {United States},
year = {Tue May 15 00:00:00 EDT 2007},
month = {Tue May 15 00:00:00 EDT 2007}
}