Abstract
The $1s\ensuremath{\rightarrow}2s$ and $1s\ensuremath{\rightarrow}2p$ excitations of the hydrogenic ions ${\mathrm{C}}^{5+}$ and ${\mathrm{O}}^{7+}$ are studied using a pseudostate expansion. A small ($3\ensuremath{-}s$, $3\ensuremath{-}p$) basis is used above the $n=3$ threshold while in the resonance region between the $n=2$ and $n=3$ thresholds a larger ($6\ensuremath{-}s$, $5\ensuremath{-}p$, $2\ensuremath{-}d$, and $1\ensuremath{-}f$) set is employed. The coupled integrodifferential equations are solved by a variational approach. High-energy and high-$L$ results are found using the Coulomb-Born 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.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
