A MUON SPECTROSCOPY INVESTIGATION OF THE GLASS-FORMING SYSTEM (LICL)-LI-6-6H(2)O

We present the results of the analysis of muon spectroscopy measuremen ts of the aqueous solution LiCl-6H(2)O. In this good glass former two species can be observed after muon implantation: MuOH (diamagnetic spe cies) and muonium (Mu) (paramagnetic species). The characterization of the species and the evolution of their fractions with field and tempe rature have been determined. The first results show that the diamagnet ic amplitude is larger in longitudinal field than in transverse field setup. It is found also that the total fraction (Mu plus MuOH) versus field for various temperatures shows a crossover at 400 G. Some hypoth eses explaining this behaviour are made, For the MuOH species, correla tion times have been determined and related to those obtained by a pre vious NMR experiment. (C) 1998 Elsevier Science B.V.