Relative rate constants for the formation of muonic radicals in liquid aromatic systems

The distribution of muon polarization between different radicals observed in neat p-di-fluorobenzene, aniline and bromobenzene and their binary mixtures with benzene has been measured and is interpreted in terms of relative rate constants for Mu addition. Mu shows the same intramolecular and intermolecular selectivity pattern as the heavier hydrogen isotopes, but its selectivity is smaller.Support by the Swiss National Foundation for Scientific Research, by the Swiss Institute for Nuclear Research (SIN), the Netherlands Organisation for the Advancement of Pure Research (Z.W.O.) and the Foundation for Fundamental Research on Matter (F.O.M.) are gratefully acknowledged.