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Triaxial rotation-axis flip triggered by an isoscalar np pair

Srivastava, P. C.; Åberg, S. LU and Ragnarsson, I. LU (2017) In Physical Review C: covering nuclear physics 95(1).
Abstract

We show that the rotation axis of a triaxial nucleus may flip from the intermediate axis (γ=-30) to the smallest axis (γ=+30) due to the polarization by an aligned T=0np pair. The example we discuss is the triaxial N=Z nucleus Ge64 where the isoscalar π(g9/2)- ν(g9/2) pair aligns to iπ=9+ in As66 and flips the rotation from γ≈-30 to γ≈30. Calculations are performed in the spherical shell model as well as in the cranked Nilsson-Strutinsky model, supporting the suggested scenario. The role of the np interaction in forming the np pair is discussed in both models.

Please use this url to cite or link to this publication:
author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Physical Review C: covering nuclear physics
volume
95
issue
1
publisher
American Physical Society
external identifiers
  • scopus:85015611508
  • wos:000398298000001
ISSN
2469-9985
DOI
10.1103/PhysRevC.95.011303
language
English
LU publication?
yes
id
c91c1c57-1d77-4d1a-ab9b-8c774732c1f6
date added to LUP
2017-04-06 08:28:46
date last changed
2018-01-07 11:58:11
@article{c91c1c57-1d77-4d1a-ab9b-8c774732c1f6,
  abstract     = {<p>We show that the rotation axis of a triaxial nucleus may flip from the intermediate axis (γ=-30) to the smallest axis (γ=+30) due to the polarization by an aligned T=0np pair. The example we discuss is the triaxial N=Z nucleus Ge64 where the isoscalar π(g9/2)- ν(g9/2) pair aligns to iπ=9+ in As66 and flips the rotation from γ≈-30 to γ≈30. Calculations are performed in the spherical shell model as well as in the cranked Nilsson-Strutinsky model, supporting the suggested scenario. The role of the np interaction in forming the np pair is discussed in both models.</p>},
  articleno    = {011303},
  author       = {Srivastava, P. C. and Åberg, S. and Ragnarsson, I.},
  issn         = {2469-9985},
  language     = {eng},
  month        = {01},
  number       = {1},
  publisher    = {American Physical Society},
  series       = {	Physical Review C: covering nuclear physics},
  title        = {Triaxial rotation-axis flip triggered by an isoscalar np pair},
  url          = {http://dx.doi.org/10.1103/PhysRevC.95.011303},
  volume       = {95},
  year         = {2017},
}