Isotope dependence of radiative muon capture on the [Formula Presented] Ni isotopes

T. P. Gorringe, D. S. Armstrong, C. Q. Chen, E. Christy, B. C. Doyle, P. Gumplinger, H. W. Fearing, M. D. Hasinoff, M. A. Kovash, D. H. Wright

Research output: Contribution to journalArticlepeer-review

8 Scopus citations


We report measurements of the photon rates and energy spectra from inclusive radiative muon capture on three nickel isotopes using a photon pair spectrometer at the TRIUMF cyclotron. The values of [Formula Presented] the partial branching ratios of radiative muon capture for photon energies [Formula Presented] MeV, for [Formula Presented] were found to be (in units of [Formula Presented] [Formula Presented] and [Formula Presented] assuming a Fermi-gas photon spectral shape. The results reveal a significant isotope effect in the nickel branching ratios and a simple empirical scaling of the present nickel and earlier nuclear [Formula Presented] data with neutron excess. Furthermore, the observed atomic mass and neutron excess dependence of the entire nuclear [Formula Presented] data set is well reproduced by a relativistic Fermi-gas calculation. The ability of the model to reproduce the variation of the [Formula Presented] data using the Goldberger-Treiman formula for [Formula Presented] suggests there is no compelling reason to invoke a more exotic [Formula Presented]-dependent renormalization of [Formula Presented].

Original languageEnglish
Pages (from-to)1767-1776
Number of pages10
JournalPhysical Review C - Nuclear Physics
Issue number3
StatePublished - 1998

ASJC Scopus subject areas

  • Nuclear and High Energy Physics


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