Abstract
Calculations are presented of energy level values, radiative transition probabilities and autoionisation rates for terms belonging to the 1s23l3l' configurations for several ions in the Be I isoelectronic sequence (C2+, N3+, O4+, Ne6+ and Xe50+). The results of a CI calculation including the configurations of the complex (and the 3d4f configuration) are compared with experimental results obtained in collisions of highly stripped ions with He, H2 and Ar and with the results of theoretical calculations.