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Observation of rotation about the longest principal axis in Zr 89

Saha, S. ; Palit, R. ; Sethi, J. ; Biswas, S. ; Singh, P. ; Nag, S. ; Singh, A. K. ; Ragnarsson, I. LU ; Babra, F. S. and Garg, U. , et al. (2019) In Physical Review C 99(5).
Abstract

High-spin states in Zr89 were populated in the Se80(C13,4n) reaction, and γ-ray coincidences were measured using the Indian National Gamma Array. The level scheme of Zr89 has been extended up to spin I=49/2 with the observation of a new dipole band. Directional correlation and polarization asymmetries of the γ rays have been measured to determine spin and parity of the levels. Line shapes of several transitions have been analyzed to determine lifetimes of the levels. Possible configurations of the band have been discussed using the cranked Nilsson-Strutinsky model. The calculations suggest a triaxial shape of the nucleus at high spins, and the band may represent rotation of the nucleus about the longest axis.

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organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Physical Review C
volume
99
issue
5
article number
054301
publisher
American Physical Society
external identifiers
  • scopus:85065321971
ISSN
2469-9985
DOI
10.1103/PhysRevC.99.054301
language
English
LU publication?
yes
id
86efcaff-5c7a-42df-b20b-42e2d93f7f95
date added to LUP
2019-05-21 13:19:25
date last changed
2022-04-26 00:10:39
@article{86efcaff-5c7a-42df-b20b-42e2d93f7f95,
  abstract     = {{<p>High-spin states in Zr89 were populated in the Se80(C13,4n) reaction, and γ-ray coincidences were measured using the Indian National Gamma Array. The level scheme of Zr89 has been extended up to spin I=49/2 with the observation of a new dipole band. Directional correlation and polarization asymmetries of the γ rays have been measured to determine spin and parity of the levels. Line shapes of several transitions have been analyzed to determine lifetimes of the levels. Possible configurations of the band have been discussed using the cranked Nilsson-Strutinsky model. The calculations suggest a triaxial shape of the nucleus at high spins, and the band may represent rotation of the nucleus about the longest axis.</p>}},
  author       = {{Saha, S. and Palit, R. and Sethi, J. and Biswas, S. and Singh, P. and Nag, S. and Singh, A. K. and Ragnarsson, I. and Babra, F. S. and Garg, U. and Goswami, A. and Ideguchi, E. and Jain, H. C. and Kumar, S. and Laskar, Md S.R. and Mukherjee, G. and Naik, Z. and Palshetkar, C. S.}},
  issn         = {{2469-9985}},
  language     = {{eng}},
  number       = {{5}},
  publisher    = {{American Physical Society}},
  series       = {{Physical Review C}},
  title        = {{Observation of rotation about the longest principal axis in Zr 89}},
  url          = {{http://dx.doi.org/10.1103/PhysRevC.99.054301}},
  doi          = {{10.1103/PhysRevC.99.054301}},
  volume       = {{99}},
  year         = {{2019}},
}