Electronimpact excitation of hydrogenic ions
Abstract
The 1s>2s and 1s>2p excitations of the hydrogenic ions C^{5+} and O^{7+} are studied using a pseudostate expansion. A small (3s, 3p) basis is used above the n=3 threshold while in the resonance region between the n=2 and n=3 thresholds a larger (6s, 5p, 2d, and 1f) set is employed. The coupled integrodifferential equations are solved by a variational approach. Highenergy and highL results are found using the CoulombBorn approximation with exchange. Positions and widths of resonances are given. An analytic fit to the calculated K matrices is used to determine cross sections in the resonance region. Excitation rates are computed.
 Publication:

Physical Review A
 Pub Date:
 November 1981
 DOI:
 10.1103/PhysRevA.24.2372
 Bibcode:
 1981PhRvA..24.2372A