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Analysis of octupole instability in medium-mass and heavy nuclei

Nazarewicz, W. ; Olanders, P. ; Ragnarsson, I. LU ; Dudek, J. ; Leander, G. A. ; Möller, P. LU and Ruchowsa, E. (1984) In Nuclear Physics, Section A 429(2). p.269-295
Abstract

Strutinsky-type potential-energy calculations are performed using various models for the microscopic as well as macroscopic energy terms. The following conclusions are nearly model-independent: Ra-Th nuclei around A {reversed tilde equals} 225 have ground-state equilibrium shapes with both quadrupole and octupole deformation; nuclei in the heavy barium region are just barely unstable with respect to octupole distortion of the quadrupole shape, while lighter nuclei are stable with respect to octupole deformation, albeit softness occurs e.g. in the region of the very light and the very heavy Z {reversed tilde equals} 34 isotopes. Tables of ground-state equilibrium shapes, calculated with the Woods-Saxon potential, are presented for... (More)

Strutinsky-type potential-energy calculations are performed using various models for the microscopic as well as macroscopic energy terms. The following conclusions are nearly model-independent: Ra-Th nuclei around A {reversed tilde equals} 225 have ground-state equilibrium shapes with both quadrupole and octupole deformation; nuclei in the heavy barium region are just barely unstable with respect to octupole distortion of the quadrupole shape, while lighter nuclei are stable with respect to octupole deformation, albeit softness occurs e.g. in the region of the very light and the very heavy Z {reversed tilde equals} 34 isotopes. Tables of ground-state equilibrium shapes, calculated with the Woods-Saxon potential, are presented for doubly-even nuclei in the Ba and Ra-Th regions of octupole-deformed nuclei.

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author
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organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Nuclear Physics, Section A
volume
429
issue
2
pages
27 pages
publisher
Elsevier
external identifiers
  • scopus:0001280370
ISSN
0375-9474
DOI
10.1016/0375-9474(84)90208-2
language
English
LU publication?
yes
id
fb57ba66-a31c-4e19-aa2f-211346ddd6ce
date added to LUP
2026-01-15 11:21:54
date last changed
2026-01-21 11:12:51
@article{fb57ba66-a31c-4e19-aa2f-211346ddd6ce,
  abstract     = {{<p>Strutinsky-type potential-energy calculations are performed using various models for the microscopic as well as macroscopic energy terms. The following conclusions are nearly model-independent: Ra-Th nuclei around A {reversed tilde equals} 225 have ground-state equilibrium shapes with both quadrupole and octupole deformation; nuclei in the heavy barium region are just barely unstable with respect to octupole distortion of the quadrupole shape, while lighter nuclei are stable with respect to octupole deformation, albeit softness occurs e.g. in the region of the very light and the very heavy Z {reversed tilde equals} 34 isotopes. Tables of ground-state equilibrium shapes, calculated with the Woods-Saxon potential, are presented for doubly-even nuclei in the Ba and Ra-Th regions of octupole-deformed nuclei.</p>}},
  author       = {{Nazarewicz, W. and Olanders, P. and Ragnarsson, I. and Dudek, J. and Leander, G. A. and Möller, P. and Ruchowsa, E.}},
  issn         = {{0375-9474}},
  language     = {{eng}},
  month        = {{11}},
  number       = {{2}},
  pages        = {{269--295}},
  publisher    = {{Elsevier}},
  series       = {{Nuclear Physics, Section A}},
  title        = {{Analysis of octupole instability in medium-mass and heavy nuclei}},
  url          = {{http://dx.doi.org/10.1016/0375-9474(84)90208-2}},
  doi          = {{10.1016/0375-9474(84)90208-2}},
  volume       = {{429}},
  year         = {{1984}},
}