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Stable triaxiality at the highest spins in 138Nd and 139Nd

Petrache, C. M. ; Bianco, G. Lo ; Ward, D. ; Galindo-Uribarri, A. ; Spolaore, P. ; Bazzacco, D. ; Kröll, T. ; Lunardi, S. ; Menegazzo, R. and Alvarez, C. Rossi , et al. (2000) In Physical Review C - Nuclear Physics 61(1). p.113051-113055
Abstract

The nuclei 138Nd and 139Nd have been studied at very high spins via the 48Ca+94Zr reaction. Several new rotational bands were observed, four in 138Nd and two in 139Nd. The J(2) moments of inertia calculated from the observed γ-ray energies are very small and almost constant, indicating that these bands are triaxial. Cranked Nilsson-Strutinsky calculations reproduce the general behavior of the bands, supporting this interpretation and suggesting an approximately constant γ value of ∼ + 35° over a large spin range up to the highest observed spins. These bands and a few similar bands in other nuclei of the N≈80 region are a unique example of almost undisturbed... (More)

The nuclei 138Nd and 139Nd have been studied at very high spins via the 48Ca+94Zr reaction. Several new rotational bands were observed, four in 138Nd and two in 139Nd. The J(2) moments of inertia calculated from the observed γ-ray energies are very small and almost constant, indicating that these bands are triaxial. Cranked Nilsson-Strutinsky calculations reproduce the general behavior of the bands, supporting this interpretation and suggesting an approximately constant γ value of ∼ + 35° over a large spin range up to the highest observed spins. These bands and a few similar bands in other nuclei of the N≈80 region are a unique example of almost undisturbed triaxial bands.

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publishing date
type
Contribution to journal
publication status
published
subject
in
Physical Review C - Nuclear Physics
volume
61
issue
1
article number
011305
pages
5 pages
publisher
American Physical Society
external identifiers
  • scopus:12944305803
ISSN
0556-2813
language
English
LU publication?
yes
id
dcf71996-d1b1-4287-987d-fa2aa7d503df
date added to LUP
2023-12-06 13:49:17
date last changed
2023-12-06 14:43:42
@article{dcf71996-d1b1-4287-987d-fa2aa7d503df,
  abstract     = {{<p>The nuclei <sup>138</sup>Nd and <sup>139</sup>Nd have been studied at very high spins via the <sup>48</sup>Ca+<sup>94</sup>Zr reaction. Several new rotational bands were observed, four in <sup>138</sup>Nd and two in <sup>139</sup>Nd. The J<sup>(2)</sup> moments of inertia calculated from the observed γ-ray energies are very small and almost constant, indicating that these bands are triaxial. Cranked Nilsson-Strutinsky calculations reproduce the general behavior of the bands, supporting this interpretation and suggesting an approximately constant γ value of ∼ + 35° over a large spin range up to the highest observed spins. These bands and a few similar bands in other nuclei of the N≈80 region are a unique example of almost undisturbed triaxial bands.</p>}},
  author       = {{Petrache, C. M. and Bianco, G. Lo and Ward, D. and Galindo-Uribarri, A. and Spolaore, P. and Bazzacco, D. and Kröll, T. and Lunardi, S. and Menegazzo, R. and Alvarez, C. Rossi and Macchiavelli, A. O. and Cromaz, M. and Fallon, P. and Lane, G. J. and Gast, W. and Lieder, R. M. and Falconi, G. and Afanasjev, A. V. and Ragnarsson, I.}},
  issn         = {{0556-2813}},
  language     = {{eng}},
  number       = {{1}},
  pages        = {{113051--113055}},
  publisher    = {{American Physical Society}},
  series       = {{Physical Review C - Nuclear Physics}},
  title        = {{Stable triaxiality at the highest spins in <sup>138</sup>Nd and <sup>139</sup>Nd}},
  volume       = {{61}},
  year         = {{2000}},
}