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

C. M. Petrache, G. Lo Bianco, D. Ward, A. Galindo-Uribarri, P. Spolaore, D. Bazzacco, T. Kröll, S. Lunardi, R. Menegazzo, C. Rossi Alvarez, A. O. Macchiavelli, M. Cromaz, P. Fallon, G. J. Lane, W. Gast, R. M. Lieder, G. Falconi, A. V. Afanasjev, I. Ragnarsson

Research output: Contribution to journalArticlepeer-review

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 triaxial bands.

Original languageEnglish
Article number011305
Pages (from-to)113051-113055
Number of pages5
JournalPhysical Review C - Nuclear Physics
Volume61
Issue number1
Publication statusPublished - 2000 Jan

Subject classification (UKÄ)

  • Subatomic Physics

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