Abstract
We report yields for 38 γ-ray lines and 29 transitions following negative muon capture on and Our results substantially increase the world data set for partial transitions on shell nuclei. They also resolve a number of inconsistencies between previously published γ-ray yields and accepted γ-decay branching ratios. We compare the measured capture rates for the allowed Gamow-Teller (GT) transitions (supplemented with earlier data) with a shell model calculation using the full space and universal SD interaction. We find a “best fit” value of the effective weak axial coupling of fair agreement for the per-target summed GT capture rates, but poor agreement for the individual GT capture rates. By replacing the shell model matrix element values with experimentally determined matrix element values, improved predictions for the individual GT capture rates are obtained. Last, we comment on recent determinations of the weak coupling via muon capture on shell nuclei.
- Received 15 March 1999
DOI:https://doi.org/10.1103/PhysRevC.60.055501
©1999 American Physical Society