Hyperfine effect in μ- Capture on Na23 and gp/ga

T. P. Gorringe, B. L. Johnson, D. S. Armstrong, J. Bauer, M. A. Kovash, M. D. Hasinoff, D. F. Measday, B. A. Moftah, R. Porter, D. H. Wright

Research output: Contribution to journalArticlepeer-review

24 Scopus citations


We report measurements of the rates and hyperfine (HF) dependences of μ- capture on Na23, and the HF transition rate in Na metal. The measured capture rates are in general agreement with the predictions of the 1s-0d shell model. The measured HF dependences of the 1017 and 1823 keV γ rays from Ne23 yield gp/ga=7.6±2.52.1 and gp/ga≤7.1(1σ), consistent with partial conservation of axial-vector current, but in disagreement with claims of an enhancement of gp/ga in light nuclei. The measured HF transition rate Δh=15.5±1.1 μs-1 is in agreement with the theory of Auger emission but twice the rate previously obtained in NaF (a∼3σ effect).

Original languageEnglish
Pages (from-to)3472-3475
Number of pages4
JournalPhysical Review Letters
Issue number22
StatePublished - 1994

ASJC Scopus subject areas

  • Physics and Astronomy (all)


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