Level scheme of /sup 148/Pm and the s-process neutron density
Journal Article
·
· Phys. Rev. C; (United States)
A level scheme of /sup 148/Pm up to 800 keV is deduced from gamma-ray coincidence data and published particle transfer data. Approximately 106 gamma-ray transitions have been placed between 36 levels. We have identified three levels below 500 keV in excitation which decay to both the ground state and to the isomeric level at 137 keV. The presence of these levels guarantees that /sup 148/Pm/sup g//sup ,//sup m/ are in thermal equilibrium during the s process. The s-process neutron density inferred from the branch point at /sup 148/Pm is deduced to be 3 x 10/sup 8//cm/sup 3/.
- Research Organization:
- Nuclear Science Division, Lawrence Berkeley Laboratory, Berkeley, California 94720
- OSTI ID:
- 6530672
- Journal Information:
- Phys. Rev. C; (United States), Journal Name: Phys. Rev. C; (United States) Vol. 39:2; ISSN PRVCA
- Country of Publication:
- United States
- Language:
- English
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71 CLASSICAL AND QUANTUM MECHANICS
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73 NUCLEAR PHYSICS AND RADIATION PHYSICS
BARYON REACTIONS
BETA DECAY
BETA DECAY RADIOISOTOPES
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ODD-ODD NUCLEI
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651720* -- Nuclear Properties & Reactions
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GENERAL PHYSICS
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BARYON REACTIONS
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BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
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COINCIDENCE SPECTROMETRY
COULOMB EXCITATION
CROSS SECTIONS
DAYS LIVING RADIOISOTOPES
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ELECTROMAGNETIC RADIATION
ENERGY LEVELS
ENERGY-LEVEL TRANSITIONS
EQUILIBRIUM
EXCITATION
GAMMA RADIATION
HADRON REACTIONS
HALF-LIFE
INTERMEDIATE MASS NUCLEI
IONIZING RADIATIONS
ISOMERIC TRANSITION ISOTOPES
ISOTOPES
NEUTRON REACTIONS
NUCLEAR DECAY
NUCLEAR REACTIONS
NUCLEI
NUCLEON REACTIONS
NUCLEOSYNTHESIS
ODD-ODD NUCLEI
PROMETHIUM 147 TARGET
PROMETHIUM 148
PROMETHIUM ISOTOPES
RADIATIONS
RADIOISOTOPES
RARE EARTH ISOTOPES
RARE EARTH NUCLEI
S PROCESS
STAR EVOLUTION
SYNTHESIS
TARGETS
THERMAL EQUILIBRIUM