Electron scattering from the fine structure levels within the 1s22s22p2 3Pe ground state of C I

Cross sections are calculated for elastic and inelastic scattering from the fine structure levels within the 1s2 2s2 2p2 3P(e) ground state of C I using the R-matrix method. The states 1s2 2s2 2p2 3P(e), 1D(e), and 1S(e) are included in the expansion of the total wave function, plus 3S(0), 3P(0), and 3D(0) polarization pseudostates to allow for the ground-state polarizability. The fine-structure energy splittings are included explicitly. Collision strengths are presented for the inelastic transitions, averaged over a Maxwellian electron velocity distribution, for electron temperatures from 7.5 to 10,000 K.