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Decay of neutron-rich /sup 144/Ba to levels of /sup 144/La

Journal Article · · Phys. Rev. C; (United States)
; ; ; ; ;
The ..gamma.. radiation following the decay of /sup 144/Ba to /sup 144/La was measured with a variety of detectors in experiments where ..gamma..-ray singles, time dependent ..gamma..-ray spectra, ..gamma gamma..t coincidence, and ..gamma gamma..t angular correlation data were collected. The /sup 144/Ba activity was produced by on-line mass separation from the products of the /sup 235/U(n,f ) reaction. The half-life of /sup 144/Ba was determined to be 11.5 +- 0.2 s. A level scheme for odd-odd /sup 144/La was deduced from coincidence information in which 91 ..gamma.. rays were placed among 26 levels. Internal conversion and angular correlation measurements yielded spin-parity assignment for several levels. Several features of the level scheme are discussed including the ..beta.. decay to low-lying levels and the possible core-coupled structure of the 1/sup +/ levels.
Research Organization:
Department of Chemistry, University of Maryland, College Park, Maryland 20742
OSTI ID:
6698844
Journal Information:
Phys. Rev. C; (United States), Journal Name: Phys. Rev. C; (United States) Vol. 26:3; ISSN PRVCA
Country of Publication:
United States
Language:
English

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Related Subjects

651722 -- Nuclear Properties & Reactions
A=90-149
Experimental-- Radioactive Decay-- (-1987)
651723 -- Nuclear Properties & Reactions
A=90-149
Experimental-- Energy Levels & Transitions-- (-1987)
652026* -- Nuclear Properties & Reactions
A=220 & above
Experimental-- Spontaneous & Induced Fission-- (-1987)
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ALKALINE EARTH ISOTOPES
ANGULAR CORRELATION
ANGULAR MOMENTUM
BARIUM 144
BARIUM ISOTOPES
BARYON REACTIONS
BETA DECAY
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY
BETA-MINUS DECAY RADIOISOTOPES
COINCIDENCE SPECTROMETRY
CORRELATIONS
DATA
DECAY
ELECTROMAGNETIC RADIATION
ENERGY LEVELS
EVEN-EVEN NUCLEI
EXPERIMENTAL DATA
FISSION
FT VALUE
GAMMA RADIATION
HADRON REACTIONS
HALF-LIFE
INFORMATION
INTERMEDIATE MASS NUCLEI
IONIZING RADIATIONS
ISOTOPES
LANTHANUM 144
LANTHANUM ISOTOPES
NEUTRON REACTIONS
NUCLEAR REACTIONS
NUCLEI
NUCLEON REACTIONS
NUMERICAL DATA
ODD-ODD NUCLEI
PARITY
PARTICLE PROPERTIES
RADIATIONS
RADIOISOTOPES
RARE EARTH ISOTOPES
RARE EARTH NUCLEI
SECONDS LIVING RADIOISOTOPES
SPIN
TARGETS
THERMAL FISSION
URANIUM 235 TARGET