Search for reflection asymmetric structures in the A =145 mass region: Decays of 1. 8-s sup 143 Cs to levels of sup 143 Ba and 4. 1-s sup 147 La to levels of sup 147 Ce

Journal Article · Thu Nov 30 23:00:00 EST 1989 · Physical Review (Section) C: Nuclear Physics; (USA)

DOI:https://doi.org/10.1103/PhysRevC.40.2804· OSTI ID:7163068

Robertson, J D; Mantica, Jr, P F; Faller, S H; Stone, C A; Baum, E M; Walters, W B ^[1]

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1. Department of Chemistry, University of Maryland, College Park, Maryland 20742 (US)

The level structures of {sup 143}Ba and {sup 147}Ce have been investigated by studying the {beta} decays of 1.8-s {sup 143}Cs and 4.1-s {sup 147}La to search for evidence of intrinsic reflection asymmetry in light rare-earth nuclei. Gamma-ray energies and relative intensity values, {gamma}-{gamma} coincidence intensities, and {gamma}-{gamma} angular correlation coefficients were measured. The parity doublets that characterize reflection asymmetric rotational structures in the light odd-{ital A} actinides were not readily identified in {sup 143}Ba or {sup 147}Ce. The observed level structures, combined with other data for these nuclides, suggest that weak deformation is present and that reflection asymmetric admixtures may play a significant role in driving that deformation.

• OSTI ID: 7163068
• Journal Information: Physical Review (Section) C: Nuclear Physics; (USA), Journal Name: Physical Review (Section) C: Nuclear Physics; (USA) Vol. 40:6; ISSN 0556-2813; ISSN PRVCA
• Country of Publication: United States
• Language: English

Related Subjects

651720* -- Nuclear Properties & Reactions
A=90-149
Experimental
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ALKALI METAL ISOTOPES
ALKALINE EARTH ISOTOPES
ANGULAR CORRELATION
BARIUM 143
BARIUM ISOTOPES
BETA DECAY
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY
BETA-MINUS DECAY RADIOISOTOPES
CERIUM 147
CERIUM ISOTOPES
CESIUM 143
CESIUM ISOTOPES
COINCIDENCE SPECTROMETRY
CORRELATIONS
DECAY
DEFORMATION
ENERGY LEVELS
EVEN-ODD NUCLEI
EXCITED STATES
GAMMA SPECTRA
INTERMEDIATE MASS NUCLEI
ISOTOPES
LANTHANUM 147
LANTHANUM ISOTOPES
MINUTES LIVING RADIOISOTOPES
NUCLEAR DECAY
NUCLEAR DEFORMATION
NUCLEI
ODD-EVEN NUCLEI
RADIOISOTOPES
RARE EARTH ISOTOPES
RARE EARTH NUCLEI
ROTATIONAL STATES
SECONDS LIVING RADIOISOTOPES
SPECTRA