Elastic scattering of 86 MeV9Li and 55 MeV6He on208Pb

The cross sections of elastically scattered9Li and6He on208Pb were measured. The scattered particles were detected by an annular CR-39 solid state nuclear track detector and the monitoring was done with a triple telescope of silicon detectors. The classical and optical model analyses of the measured elastic cross sections have been carried out. It was shown that the peripheral9Li interaction region has a rather high transparency. Strong dynamical polarization of9Li ions in the process of scattering is suggested.