Shape coexistence in the transitional [sup 133]Ba nucleus

Journal Article · Sat Apr 01 04:00:00 EST 1995 · Physical Review, C (Nuclear Physics); (United States)

DOI:https://doi.org/10.1103/PhysRevC.51.1699· OSTI ID:6546330

Juutinen, S; Simecek, P; Ahonen, P; Carpenter, M; Fahlander, C; Gascon, J; Julin, R; Lampinen, A; Loennroth, T; Nyberg, J; Pakkanen, A; Piiparinen, M; Schiffer, K; Sletten, G; Toermaenen, S; Virtanen, A ^[1]

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1. Department of Physics, University of Jyvaeskylae, P.O. Box 35, FIN-40351 Jyvaeskylae (Finland) Institute of Nuclear Physics, Czech Academy of Sciences, 250 68 Rez near Prag (Czech Republic) The Niels Bohr Institute, Tandem Accelerator Laboratory, DK-4000 Roskilde (Denmark) The Svedberg Laboratory, Uppsala University, Box 535, S-75121 Uppsala (Sweden) Department of Physics, Abo Akademi, FIN-20500 Turku (Finland)

High-spin states in the [sup 133]Ba nucleus have been populated using the [sup 124]Sn([sup 13]C,4[ital n]) reaction. Excited states were observed up to [ital I]=45/2 and several bands were constructed. Most of the observed bands are characterized by intense dipole transitions. At low spin, bands built on mixed [nu][ital s][sub 1/2] and [nu][ital d][sub 3/2] configurations and on the [nu][ital h][sub 11/2] configuration were observed. The latter band is associated with a large signature splitting of about 300 keV. According to total Routhian surface calculations, in this band the nucleus has a triaxial shape with [gamma][approx][minus]80[degree]. At higher spin, bands built on three- and five-quasiparticle configurations were identified. These bands may possess a weakly deformed shape with either [gamma][gt]0[degree] or [gamma][lt][minus]60[degree], depending on the number of [ital h][sub 11/2] protons and neutrons involved in the configuration.

• OSTI ID: 6546330
• Journal Information: Physical Review, C (Nuclear Physics); (United States), Journal Name: Physical Review, C (Nuclear Physics); (United States) Vol. 51:4; ISSN 0556-2813; ISSN PRVCAN
• Country of Publication: United States
• Language: English

Related Subjects

663110* -- General & Average Properties of Nuclei & Nuclear Energy Levels-- (1992-)
663220 -- Electromagnetic Transitions-- (1992-)
663560 -- Nuclear Mass Ranges-- A=90-149-- (1992-)
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ALKALINE EARTH ISOTOPES
BARIUM 133
BARIUM ISOTOPES
BARYONS
BETA DECAY RADIOISOTOPES
CARBON 13 REACTIONS
CHARGED-PARTICLE REACTIONS
DAYS LIVING RADIOISOTOPES
DEFORMED NUCLEI
DIPOLES
ELECTRON CAPTURE RADIOISOTOPES
ELEMENTARY PARTICLES
ENERGY LEVELS
EVEN-ODD NUCLEI
FERMIONS
HADRONS
HEAVY ION REACTIONS
HIGH SPIN STATES
INTERMEDIATE MASS NUCLEI
INTERNAL CONVERSION RADIOISOTOPES
ISOMERIC TRANSITION ISOTOPES
ISOTOPES
MULTIPOLES
NEUTRONS
NUCLEAR REACTIONS
NUCLEI
NUCLEONS
PROTONS
RADIOISOTOPES
SHAPE
TARGETS
TIN 124 TARGET