Rotational bands in /sup 133/Ce

Journal Article · Tue Dec 01 00:00:00 EST 1987 · Phys. Rev. C; (United States)

DOI:https://doi.org/10.1103/PhysRevC.36.2322· OSTI ID:5659942

Ma, R; Paul, E S; Beausang, C W; Shi, S; Xu, N; Fossan, D B

Several rotational bands built on one- and three-quasiparticle configurations have been populated in the odd-neutron /sup 133/Ce nucleus following the /sup 119/Sn(/sup 18/O,4n) reaction. Both signature components of bands built on the (514)(9/2/sup -/ and (400)(1/2/sup +/ orbitals were observed. At low spins, the yrast band, based on a neutron from the upper h/sub 11/2/ midshell, shows a large signature splitting (>100 keV), indicating a significant triaxial deformation (..gamma..approx.-20/sup 0/). Four ..delta..I = 1 bands were observed at higher spins based on three-quasiparticle configurations. Strong M1 transitions and the lack of signature splitting imply that these bands are near prolate (..gamma..approx.0/sup 0/) and thus contain one or more aligned h/sub 11/2/ protons from the lower midshell. In two of these bands, weak E2 crossover transitions were seen; measured B(M1;I..-->..I-1)/B(E2;I..-->..I-2) ratios were used to assign configurations. In addition, a ..delta..I = 2 band with an enhanced moment of inertia was observed most probably built on the prolate ..nu..i/sub 13/2/x(..pi..h/sub 11/2/)/sup 2/ configuration. Only one signature component of this configuration was seen because of the maximal signature splitting of the ..beta..-driving i/sub 13/2/ neutron orbital (..cap omega.. = (1/2).

• Research Organization: Department of Physics, State University of New York at Stony Brook, Stony Brook, New York 11794
• OSTI ID: 5659942
• Journal Information: Phys. Rev. C; (United States), Vol. 36:6
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
CERIUM 133
E2-TRANSITIONS
M1-TRANSITIONS
ROTATIONAL STATES
COMPOUND-NUCLEUS REACTIONS
MOMENT OF INERTIA
MULTIPLICITY
NEUTRONS
OXYGEN 18 REACTIONS
YRAST STATES
BARYONS
BETA DECAY RADIOISOTOPES
BETA-PLUS DECAY RADIOISOTOPES
CERIUM ISOTOPES
CHARGED-PARTICLE REACTIONS
ELECTRON CAPTURE RADIOISOTOPES
ELEMENTARY PARTICLES
ENERGY LEVELS
ENERGY-LEVEL TRANSITIONS
EVEN-ODD NUCLEI
EXCITED STATES
FERMIONS
HADRONS
HEAVY ION REACTIONS
HOURS LIVING RADIOISOTOPES
INTERMEDIATE MASS NUCLEI
ISOTOPES
MULTIPOLE TRANSITIONS
NUCLEAR REACTIONS
NUCLEI
NUCLEONS
RADIOISOTOPES
RARE EARTH ISOTOPES
RARE EARTH NUCLEI
651720* - Nuclear Properties & Reactions
A=90-149
Experimental