Abstract
Close-coupling calculations are carried out using the R-matrix method for the excitation of a number of states of boronlike carbon, nitrogen, and oxygen by electron impact. The ten lowest LS states of C+ and the eight lowest states of N2+ and O3+ are considered in the eigenfunction expansions. Including fine structure the collision strengths are calculated for all transitions among the states 2s22p(2 P1/2,3/2o), 2s2p2 (4 P1/2,3/2,5/2 ,2 D3/2,5/2 ,2S 1/2 ,2 P1/2,3/2), 2p3 (4 S3/2o ,2 D3 2,5/2o ,2 P1/2 ,32o), 2s23s(2 S1/2), and 2s23p(2 P1/2,