Decay of /sup 143/Ba to levels of the odd-proton N = 86 nuclide /sup 143/La

Journal Article · Fri Jul 01 04:00:00 EDT 1988 · Phys. Rev. C; (United States)

DOI:https://doi.org/10.1103/PhysRevC.38.307· OSTI ID:7144878

Faller, S H; Robertson, J D; Baum, E M; Chung, C; Stone, C A; Walters, W B

The level structure of /sup 143/La has been investigated by measurement of gamma-ray and conversion-electron singles, gamma-gamma coincidence, and gamma-gamma angular correlation spectra following the decay of 15.0-s /sup 143/Ba. Comparison of the observed structure of /sup 143/La with the structures of isotopic La and isotonic N = 86 nuclides, as well as those of the adjacent Cs isotopes and N = 84 isotones, suggests the presence of unusual low-lying (3/2/sup +/ and (5/2/sup -/ levels that are not readily accounted for by theoretical calculations. The observed structures suggest that the deformation in this mass region is influenced by different factors than that of the nuclides above Z = 64, and that reflection asymmetric structures play an important role in the structure of the nuclides in the A = 145 mass region.

• Research Organization: Department of Chemistry, University of Maryland, College Park, Maryland 20742
• OSTI ID: 7144878
• Journal Information: Phys. Rev. C; (United States), Journal Name: Phys. Rev. C; (United States) Vol. 38:1; 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
ALKALINE EARTH ISOTOPES
AMPLITUDES
BARIUM 143
BARIUM ISOTOPES
BETA DECAY
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY
BETA-MINUS DECAY RADIOISOTOPES
COINCIDENCE METHODS
COUNTING TECHNIQUES
DATA
DECAY
DEFORMED NUCLEI
ENERGY LEVELS
ENERGY-LEVEL TRANSITIONS
EVEN-ODD NUCLEI
EXPERIMENTAL DATA
GAMMA SPECTRA
INFORMATION
INTERMEDIATE MASS NUCLEI
ISOTOPES
LANTHANUM 143
LANTHANUM ISOTOPES
MINUTES LIVING RADIOISOTOPES
NUCLEAR STRUCTURE
NUCLEI
NUMERICAL DATA
ODD-EVEN NUCLEI
PARITY
PARTICLE PROPERTIES
QUADRUPOLE MOMENTS
RADIOISOTOPES
RARE EARTH ISOTOPES
RARE EARTH NUCLEI
SECONDS LIVING RADIOISOTOPES
SPECTRA
TRANSITION AMPLITUDES