Stable triaxiality at the highest spins in {sup 138}Nd and {sup 139}Nd

Journal Article · Sat Jan 01 04:00:00 EST 2000 · Physical Review. C, Nuclear Physics

DOI:https://doi.org/10.1103/PhysRevC.61.011305· OSTI ID:20215134

Petrache, C M ^[1]; Lo Bianco, G ^[2]; Ward, D ^[3]; Galindo-Uribarri, A ^[4]; Spolaore, P ^[5]; Bazzacco, D ^[1]; Kroell, T ^[1]; Lunardi, S ^[1]; Menegazzo, R ^[1]; Alvarez, C Rossi ^[1]

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1. Dipartimento di Fisica and INFN, Sezione di Padova, Padova, (Italy)
2. Dipartimento di Matematica e Fisica, University of Camerino, Camerino, (Italy)
3. Nuclear Science Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720 (United States)
4. Physics Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831 (United States)
5. INFN, Laboratori Nazionali di Legnaro, Legnaro, (Italy)

The nuclei {sup 138}Nd and {sup 139}Nd have been studied at very high spins via the {sup 48}Ca+{sup 94}Zr reaction. Several new rotational bands were observed, four in {sup 138}Nd and two in {sup 139}Nd. The J{sup (2)} moments of inertia calculated from the observed {gamma}-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 {gamma} value of {approx}+35 degree sign over a large spin range up to the highest observed spins. These bands and a few similar bands in other nuclei of the N{approx_equal}80 region are a unique example of almost undisturbed triaxial bands. (c) 1999 The American Physical Society.

• OSTI ID: 20215134
• Journal Information: Physical Review. C, Nuclear Physics, Journal Name: Physical Review. C, Nuclear Physics Journal Issue: 1 Vol. 61; ISSN 0556-2813; ISSN PRVCAN
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
CALCIUM 48 BEAMS
DEFORMED NUCLEI
EXPERIMENTAL DATA
GAMMA SPECTRA
HIGH SPIN STATES
MOMENT OF INERTIA
NEODYMIUM 138
NEODYMIUM 139
ROTATIONAL STATES
ZIRCONIUM 94 TARGET