Dielectronic processes producing radiative stabilization in slow Ne10++He collisions

Different contributions to radiative stabilization in Ne10++He collisions at projectile energies of 10 and 150 keV are studied. For both energies, radiative stabilization is found to be equal to ≅0.3 when referred to the total double capture. In Ne10++He collisions doubly excited states 3lnl' and 4lnl' (n≥4) are either produced by uncorrelated two-electron transitions or by dielectronic mechanisms due to electron-electron interaction. A strong contribution (≅0.15) to the stabilization follows from the decay of near-equivalent electrons 3lnl' and 4lnl'(n=4,5). Another major contribution (0.10 endash 0.25) to stabilization is due to the decay of configurations 3lnl' (n≥6) of nonequivalent electrons produced by the dielectronic process of autoexcitation. A small contribution is found to be due to the configurations 3lnl' (n approx-gt 9) created by dielectronic phenomena in the postcollisional and asymptotic regions (≅0.04). copyright 1996 The American Physical Society