Measurement of partial muon capture rates in [Formula Presented] shell nuclei

T. P. Gorringe, D. S. Armstrong, S. Arole, M. Boleman, E. Gete, V. Kuzmin, B. A. Moftah, R. Sedlar, T. J. Stocki, T. Tetereva

Research output: Contribution to journalArticlepeer-review


We report yields for 38 γ-ray lines and 29 [Formula Presented] transitions following negative muon capture on [Formula Presented] [Formula Presented] and [Formula Presented] Our results substantially increase the world data set for partial [Formula Presented] transitions on [Formula Presented] 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 [Formula Presented] data) with a shell model calculation using the full [Formula Presented] space and universal SD interaction. We find a “best fit” value of the effective weak axial coupling of [Formula Presented] fair agreement for the per-target summed GT capture rates, but poor agreement for the individual GT capture rates. By replacing the shell model [Formula Presented] matrix element values with experimentally determined [Formula Presented] matrix element values, improved predictions for the individual GT capture rates are obtained. Last, we comment on recent determinations of the weak coupling [Formula Presented] via muon capture on [Formula Presented] shell nuclei.

Original languageEnglish
Pages (from-to)15
Number of pages1
JournalPhysical Review C - Nuclear Physics
Issue number5
StatePublished - 1999

ASJC Scopus subject areas

  • Nuclear and High Energy Physics


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