Heavy ion channeling in crystals

The results of two experimental investigations in which the channeling effects on electron loss and capture appear successively are discussed. The experiments were performed with a 27 MeV xenon beam at Ganil facility. The x-ray spectrum emitted by a Si crystal is obtained. The charge and the energy of the transmitted ions was analyzed. The charge state distributions of Xe ions transmitted through the Si crystal in random conditions and for < 100 > axial alignment are shown. The angular dependence of Ly α yield is illustrated. The electron density map in a Si crystal is given