Rotational bands in sup 135 Ce: Collective prolate and oblate rotation

Journal Article · Fri Jun 01 00:00:00 EDT 1990 · Physical Review, C (Nuclear Physics); (USA)

DOI:https://doi.org/10.1103/PhysRevC.41.2624· OSTI ID:7095490

Ma, R; Paul, E S; Fossan, D B; Liang, Y; Xu, N ^[1]; Wadsworth, R ^[2]; Jenkins, I; Nolan, P J ^[3]

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1. Department of Physics, State University of New York at Stony Brook, Stony Brook, New York 11794 (USA)
2. Department of Physics, University of York, Heslington, York Y015DD, (United Kingdom)
3. Oliver Lodge Laboratory, University of Liverpool, P.O. Box 147, Liverpool L693BX, (United Kingdom)

Several rotational bands have been established in the {ital N}=77 {sup 135}Ce nucleus following the {sup 122}Sn({sup 18}O,5{ital n}{gamma}) reaction. At low spins, the yrast band, built on an orbital from the top of the {nu}{ital h}{sub 11/2} shell, exhibits a large signature splitting of {similar to}300 keV implying a significant deviation from axial symmetry ({gamma}{much lt}0{degree}). At higher spins, three {Delta}{ital I}=1 bands were established. Two of these bands are built on prolate ({gamma}{similar to}0{degree}) mixed neutron-proton configurations as systematically observed in several {ital N}=75 isotones. The third of these bands shows properties similar to those observed for collectively rotating ({gamma}{similar to}{minus}60{degree}) mixed neutron-proton configurations as recently reported in nearby odd-{ital Z}, doubly odd, and even-even nuclei. The present study represents the first observation of such a band in an odd-{ital N} nucleus. In addition, two decoupled {Delta}{ital I}=2 bands, built on oblate three-quasineutron configurations, were observed.

• OSTI ID: 7095490
• Journal Information: Physical Review, C (Nuclear Physics); (USA), Journal Name: Physical Review, C (Nuclear Physics); (USA) Vol. 41:6; ISSN 0556-2813; ISSN PRVCA
• Country of Publication: United States
• Language: English

Related Subjects

651720* -- Nuclear Properties & Reactions
A=90-149
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73 NUCLEAR PHYSICS AND RADIATION PHYSICS
BARYONS
BETA DECAY RADIOISOTOPES
BETA-PLUS DECAY RADIOISOTOPES
CERIUM 135
CERIUM ISOTOPES
CHARGED-PARTICLE REACTIONS
COINCIDENCE SPECTROMETRY
COMPOUND-NUCLEUS REACTIONS
ELECTRON CAPTURE RADIOISOTOPES
ELEMENTARY PARTICLES
ENERGY LEVELS
ENERGY RANGE
EVEN-ODD NUCLEI
EXCITED STATES
FERMIONS
GE SEMICONDUCTOR DETECTORS
HADRONS
HEAVY ION REACTIONS
HIGH SPIN STATES
HOURS LIVING RADIOISOTOPES
INTERMEDIATE MASS NUCLEI
ISOTOPES
MEASURING INSTRUMENTS
MEV RANGE
MEV RANGE 10-100
NEUTRONS
NUCLEAR REACTIONS
NUCLEI
NUCLEONS
OXYGEN 18 REACTIONS
RADIATION DETECTORS
RADIOISOTOPES
RARE EARTH ISOTOPES
RARE EARTH NUCLEI
ROTATIONAL STATES
SEMICONDUCTOR DETECTORS
TARGETS
TIN 122 TARGET
YRAST STATES