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  • 1
    Electronic Resource
    Electronic Resource
    Muon addition to nitrogen, oxygen and other atoms: Considerations for level crossing resonance studies (1991)
    Springer
    Hyperfine interactions 65 (1991), S. 987-992 
    Details
    ISSN: 1572-9540
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The purpose of this note is to examine the conditions under which muon level crossing resonance with quadrupolar nuclei may be used to characterise the elusive diamagnetic fraction which is formed when positive muons are stopped in various media and associated chemically with the host molecules. A potential difficulty is identified for nuclei having integral spin, which may explain why cross polarisation to14N has not yet been detected. The general suitability of nuclei with half-integral spin (I≥3/2) is illustrated with the case of17O, and suggestions are made for future studies with other nuclei, including species such as molecular ions and defect complexes (muon-impurity pairs).
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02397754
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  • 2
    Electronic Resource
    Electronic Resource
    Solvent effects on the hyperfine coupling constant and barrier to internal rotation for the 2-muoxyprop-2-Yl radical (1991)
    Springer
    Hyperfine interactions 65 (1991), S. 927-936 
    Details
    ISSN: 1572-9540
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The muon-electron β-hyperfine coupling constant is reported for the 2-muoxyprop-2-yl radical formed by positive muon (μ+) implantation in propan-2-one and aqueous solutions of propan-2-one. Using the technique of muon spin rotation (μSR) spectroscopy the coupling constant was measured over a full temperature range in which the samples were in the liquid state. In all cases, the coupling constants were found to be small, and to show a positive temperature dependence. In the aqueous mixtures the presence of the water produces a slight lowering, at all temperatures, in the coupling constant with respect to the coupling in pure propan-2-one. An interpretation is given which relates the radical structure, to the barrier hindering internal rotation and to solvent interactions.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02397744
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