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

Technical Report · Tue Dec 31 23:00:00 EST 1985

OSTI ID:5497326

Kellogg, S E; Norman, E B

The t/sub 1/2/ = 5.7 minute /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 +- 0.018%. The limit of 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. 23 refs., 3 figs., 3 tabs.

• Research Organization: Washington Univ., Seattle (USA). Nuclear Physics Lab.; Lawrence Berkeley Lab., CA (USA)
• DOE Contract Number: AC03-76SF00098; AC06-81ER40048
• OSTI ID: 5497326
• Report Number(s): DOE/ER/40048-171-L6; ON: DE86014378
• 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
BETA DECAY
CHEMISTRY
DATA
DECAY
EVEN-EVEN NUCLEI
EXPERIMENTAL DATA
GAMMA SPECTRA
HAFNIUM 180
HAFNIUM ISOTOPES
HOURS LIVING RADIOISOTOPES
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INTERMEDIATE MASS NUCLEI
INTERNAL CONVERSION RADIOISOTOPES
ISOMERIC TRANSITION ISOTOPES
ISOMERS
ISOTOPES
NUCLEI
NUCLEOSYNTHESIS
NUMERICAL DATA
RADIOCHEMISTRY
RADIOISOTOPES
SPECTRA
STABLE ISOTOPES
SYNTHESIS