Investigation of the paramagnetism of μ-mesic atoms

The nature of the paramagnetism of various mesic atoms was investigated by measuring the asymmetry of mu e-decay electrons. The results of the experiments indicate that in dielectrics, diamagnetic and weakly paramagnetic normal metals paramagnetism of mesic atoms is caused by the mu meson magnetic moment, whereas in paramagnetic transition metals, lanthanides and actinides it is due to the magnetic moments of the electron shell and of the meson. It is shown that polarized mesons can be employed as a means of investigating the magnetic properties of atoms and the hydrides of the transition metals, actinides and lanthanides which possess zero nuclear spin. (auth)