Observation of the beta decay of 180Hfm

Details Observation of the beta decay of 180Hfm Observation of the beta decay of 180Hfm

Apr 1985

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985phrvc..31.1505k&link_type=abstract

Physical Review C (Nuclear Physics), Volume 31, Issue 4, April 1985, pp.1505-1509

Physics

Nuclear Physics

12

150<=A<=189, Relation With Nuclear Matrix Elements And Nuclear Structure, Gamma Transitions And Level Energies, Origin, Formation, And Abundances Of The Elements

Scientific paper

A new γ ray with an energy of 100.7 keV has been observed in the decay of 180Hfm. This line is interpreted as the transition between the Iπ=8+ level at 174 keV and the 9- isomeric state in 180Ta following the 113-keV endpoint β decay of 180Hfm. The laboratory branching ratio is 2.3×10-4 compared to the electromagnetic decay mode of 180Hfm. A possible second branch to a proposed 7- level in 180Ta is not seen. Even when the enhancement due to bound state β decay in a stellar environment is included, the observed branch is not sufficient to explain the abundance of 180Tam in the universe.

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