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Axial and reflection asymmetry of the nuclear ground state

Moeller, P.; Bengtsson, Ragnar LU ; Carlsson, Gillis LU ; Olivius, Peter LU ; Ichikawa, T.; Sagawa, H. and Iwamoto, A. (2008) In Atomic Data and Nuclear Data Tables 94(5). p.758-780
Abstract
More than a decade ago we published a calculation of nuclear ground-state masses and deformations in Atomic Data and Nuclear Data Tables [P. Moller, J.R. Nix, W.D. Myers, W.J. Swiatecki, At. Data Nucl. Data Tables 59 (1995) 185]. In this study, triaxial nuclear shapes were not considered. We have now enhanced our model and studied the influence of triaxial shape degrees of freedom on the nuclear ground-state potential-energy (mass) and ground-state shape. It turns out that a few hundred nuclei are affected to a varying degree with the largest effect, about 0.7 MeV, occurring near Ru-108. We provide here a table of the calculated effects of triaxial shape degrees of freedom. Although axial-asymmetry effects were not considered in the 1995... (More)
More than a decade ago we published a calculation of nuclear ground-state masses and deformations in Atomic Data and Nuclear Data Tables [P. Moller, J.R. Nix, W.D. Myers, W.J. Swiatecki, At. Data Nucl. Data Tables 59 (1995) 185]. In this study, triaxial nuclear shapes were not considered. We have now enhanced our model and studied the influence of triaxial shape degrees of freedom on the nuclear ground-state potential-energy (mass) and ground-state shape. It turns out that a few hundred nuclei are affected to a varying degree with the largest effect, about 0.7 MeV, occurring near Ru-108. We provide here a table of the calculated effects of triaxial shape degrees of freedom. Although axial-asymmetry effects were not considered in the 1995 mass calculation, it did study the effects of reflection-asymmetric shape degrees of freedom (epsilon(3)) on nuclear masses. However, the magnitude of the effect was not tabulated. Here, we provide such a table. In addition we calculate the effect in a much improved fashion: we search a four-dimensional deformation space (epsilon(2), epsilon(3), epsilon(4), and epsilon(6)). This is now possible because the computational resources available to us today are more than 100,000 times better than at the time we calculated the mass table published in 1995. (C) 2008 Elsevier Inc. All rights reserved. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Atomic Data and Nuclear Data Tables
volume
94
issue
5
pages
758 - 780
publisher
Elsevier
external identifiers
  • wos:000259052900005
  • scopus:49549089976
ISSN
0092-640X
DOI
10.1016/j.adt.2008.05.002
language
English
LU publication?
yes
id
d169cc8a-3346-4194-9fd6-c6187e97418a (old id 1247089)
date added to LUP
2008-11-20 10:02:36
date last changed
2017-09-24 03:59:12
@article{d169cc8a-3346-4194-9fd6-c6187e97418a,
  abstract     = {More than a decade ago we published a calculation of nuclear ground-state masses and deformations in Atomic Data and Nuclear Data Tables [P. Moller, J.R. Nix, W.D. Myers, W.J. Swiatecki, At. Data Nucl. Data Tables 59 (1995) 185]. In this study, triaxial nuclear shapes were not considered. We have now enhanced our model and studied the influence of triaxial shape degrees of freedom on the nuclear ground-state potential-energy (mass) and ground-state shape. It turns out that a few hundred nuclei are affected to a varying degree with the largest effect, about 0.7 MeV, occurring near Ru-108. We provide here a table of the calculated effects of triaxial shape degrees of freedom. Although axial-asymmetry effects were not considered in the 1995 mass calculation, it did study the effects of reflection-asymmetric shape degrees of freedom (epsilon(3)) on nuclear masses. However, the magnitude of the effect was not tabulated. Here, we provide such a table. In addition we calculate the effect in a much improved fashion: we search a four-dimensional deformation space (epsilon(2), epsilon(3), epsilon(4), and epsilon(6)). This is now possible because the computational resources available to us today are more than 100,000 times better than at the time we calculated the mass table published in 1995. (C) 2008 Elsevier Inc. All rights reserved.},
  author       = {Moeller, P. and Bengtsson, Ragnar and Carlsson, Gillis and Olivius, Peter and Ichikawa, T. and Sagawa, H. and Iwamoto, A.},
  issn         = {0092-640X},
  language     = {eng},
  number       = {5},
  pages        = {758--780},
  publisher    = {Elsevier},
  series       = {Atomic Data and Nuclear Data Tables},
  title        = {Axial and reflection asymmetry of the nuclear ground state},
  url          = {http://dx.doi.org/10.1016/j.adt.2008.05.002},
  volume       = {94},
  year         = {2008},
}