Search for the beta decay of /sup 180/Lu to /sup 180/Hf/sup m/

Journal Article · Sun Nov 30 23:00:00 EST 1986 · Phys. Rev. C; (United States)

DOI:https://doi.org/10.1103/PhysRevC.34.2248· OSTI ID:6895213

Kellogg, S E; Norman, E B

The t/sub 1/2/ = 5.7 min /sup 180/Lu isotope was produced in the /sup 180/Hf(n,p) reaction and its subsequent ..beta.. decay back to /sup 180/Hf was studied with a Ge(Li) spectrometer. A radiochemical technique was used to measure the fractional population of the I/sup ..pi../, K = (8/sup -/,8) isomer in /sup 180/Hf to be f/sub m/ = 0.005 +- 0.018X The limit on f/sub m/ is shown to be too small to account for the nucleosynthesis of /sup 180/Ta/sup m/ in the r process. The possible existence of a high-spin isomer in /sup 180/Lu and its astrophysical consequences are discussed.

• Research Organization: Nuclear Physics Laboratory, University of Washington, Seattle, Washington 98195
• DOE Contract Number: AC06-81ER40048; AC03-76SF00098
• OSTI ID: 6895213
• Journal Information: Phys. Rev. C; (United States), Journal Name: Phys. Rev. C; (United States) Vol. 34:6; ISSN PRVCA
• Country of Publication: United States
• Language: English

Related Subjects

651820* -- Nuclear Properties & Reactions
A=150-189
Experimental
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ASTROPHYSICS
BARYON REACTIONS
BETA DECAY
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY
BETA-MINUS DECAY RADIOISOTOPES
CHARGE-EXCHANGE REACTIONS
CHEMICAL ANALYSIS
DECAY
ELECTRON CAPTURE RADIOISOTOPES
ENERGY LEVELS
ENERGY-LEVEL TRANSITIONS
EVEN-EVEN NUCLEI
HADRON REACTIONS
HAFNIUM 180
HAFNIUM 180 TARGET
HAFNIUM ISOTOPES
HALF-LIFE
HIGH SPIN STATES
HOURS LIVING RADIOISOTOPES
INTERMEDIATE MASS NUCLEI
INTERNAL CONVERSION RADIOISOTOPES
ISOMERIC TRANSITION ISOTOPES
ISOMERIC TRANSITIONS
ISOTOPES
LUTETIUM 180
LUTETIUM ISOTOPES
NEUTRON REACTIONS
NUCLEAR REACTIONS
NUCLEI
NUCLEON REACTIONS
NUCLEOSYNTHESIS
ODD-ODD NUCLEI
QUANTITATIVE CHEMICAL ANALYSIS
R PROCESS
RADIOCHEMICAL ANALYSIS
RADIOISOTOPES
RARE EARTH ISOTOPES
RARE EARTH NUCLEI
STABLE ISOTOPES
STAR EVOLUTION
SYNTHESIS
TANTALUM 180
TANTALUM ISOTOPES
TARGETS