POLARIZED-LIGHT EMISSION DURING VERY SLOW AR8-LI(2S) COLLISIONS (E=0.1-1.0 KEV AMU(-1))()

We report on the polarization of lines emitted by Ar7+ excited ions pr oduced by the single-electron capture process during Ar8+-Li(2s) colli sions at very low impact energies (E = 0.1-1.0 keV amu(-1)). The polar ization degrees of lines corresponding to 7l'-8l and 8l'-9l transition s were measured and were compared with theoretical polarization degree s obtained from nlm(l) distributions calculated by using the classical trajectory Monte Carlo (CTMC) method. A remarkable energy dependence is observed in both the experimental and theoretical results at very l ow projectile velocity. A qualitative discussion based on the relative importance of the different dynamical couplings is proposed.