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Global calculations of ground-state axial shape asymmetry of nuclei

Moller, Peter ; Bengtsson, Ragnar LU ; Carlsson, Gillis LU ; Olivius, Peter LU and Ichikawa, Takatoshi (2006) In Physical Review Letters 97(16).
Abstract
Important insight into the symmetry properties of the nuclear ground-state (gs) shape is obtained from the characteristics of low-lying collective energy-level spectra. In the 1950s, experimental and theoretical studies showed that in the gs many nuclei are spheroidal in shape rather than spherical. Later, a hexadecapole component of the gs shape was identified. In the 1970-1995 time frame, a consensus that reflection symmetry of the gs shape was broken for some nuclei emerged. Here we present the first calculation across the nuclear chart of axial symmetry breaking in the nuclear gs. We show that we fulfill a necessary condition: Where we calculate axial symmetry breaking, characteristic gamma bands are observed experimentally. Moreover,... (More)
Important insight into the symmetry properties of the nuclear ground-state (gs) shape is obtained from the characteristics of low-lying collective energy-level spectra. In the 1950s, experimental and theoretical studies showed that in the gs many nuclei are spheroidal in shape rather than spherical. Later, a hexadecapole component of the gs shape was identified. In the 1970-1995 time frame, a consensus that reflection symmetry of the gs shape was broken for some nuclei emerged. Here we present the first calculation across the nuclear chart of axial symmetry breaking in the nuclear gs. We show that we fulfill a necessary condition: Where we calculate axial symmetry breaking, characteristic gamma bands are observed experimentally. Moreover, we find that, for those nuclei where axial asymmetry is found, a systematic deviation between calculated and measured masses is removed. (Less)
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organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Physical Review Letters
volume
97
issue
16
publisher
American Physical Society
external identifiers
  • wos:000241405400018
  • scopus:33750175696
  • pmid:17155391
ISSN
1079-7114
DOI
10.1103/PhysRevLett.97.162502
language
English
LU publication?
yes
additional info
The information about affiliations in this record was updated in December 2015. The record was previously connected to the following departments: Mathematical Physics (Faculty of Technology) (011040002)
id
e644ec9e-2066-4ea7-83ff-23235ab6e561 (old id 908301)
date added to LUP
2016-04-01 11:39:16
date last changed
2021-09-29 04:16:19
@article{e644ec9e-2066-4ea7-83ff-23235ab6e561,
  abstract     = {Important insight into the symmetry properties of the nuclear ground-state (gs) shape is obtained from the characteristics of low-lying collective energy-level spectra. In the 1950s, experimental and theoretical studies showed that in the gs many nuclei are spheroidal in shape rather than spherical. Later, a hexadecapole component of the gs shape was identified. In the 1970-1995 time frame, a consensus that reflection symmetry of the gs shape was broken for some nuclei emerged. Here we present the first calculation across the nuclear chart of axial symmetry breaking in the nuclear gs. We show that we fulfill a necessary condition: Where we calculate axial symmetry breaking, characteristic gamma bands are observed experimentally. Moreover, we find that, for those nuclei where axial asymmetry is found, a systematic deviation between calculated and measured masses is removed.},
  author       = {Moller, Peter and Bengtsson, Ragnar and Carlsson, Gillis and Olivius, Peter and Ichikawa, Takatoshi},
  issn         = {1079-7114},
  language     = {eng},
  number       = {16},
  publisher    = {American Physical Society},
  series       = {Physical Review Letters},
  title        = {Global calculations of ground-state axial shape asymmetry of nuclei},
  url          = {http://dx.doi.org/10.1103/PhysRevLett.97.162502},
  doi          = {10.1103/PhysRevLett.97.162502},
  volume       = {97},
  year         = {2006},
}