Stable triaxiality at the highest spins in Nd-138 and Nd-139 - art. no. 011305

Authors
Petrache, CM Lo Bianco, G Ward, D Galindo-Uribarri, A Spolaore, P Bazzacco, D Kroll, T Lunardi, S Menegazzo, R Alvarez, CR Macchiavelli, AO Cromaz, M Fallon, P Lane, GJ Gast, W Lieder, RM Falconi, G Afanasjev, AV Ragnarsson, I
Citation
Cm. Petrache et al., Stable triaxiality at the highest spins in Nd-138 and Nd-139 - art. no. 011305, PHYS REV C, 6101(1), 2000, pp. 1305
Citations number
15
Categorie Soggetti
Physics
Journal title
PHYSICAL REVIEW C-NUCLEAR PHYSICS
ISSN journal
05562813 → ACNP
Volume
6101
Issue
1
Year of publication
2000
Database
ISI
SICI code
0556-2813(200001)6101:1<1305:STATHS>2.0.ZU;2-P
Abstract
The nuclei Nd-138 and Nd-139 have been studied at very high spins via the C a-48+Zr-94 reaction. Several new rotational bands were observed, four in Nd -138 and two in Nd-139. Th, J((2)) moments of inertia calculated from the o bserved gamma-ray energies are very small and almost constant, indicating t hat these bands are triaxial. Cranked Nilsson-Strutinsky calculations repro duce the general behavior of the bands, supporting this interpretation and suggesting an approximately constant gamma value of similar to +35 degrees over a large spin range up to the highest observed spins. These bands and a few similar bands in other nuclei of the N approximate to 80 region are a unique example of almost undisturbed triaxial bands.