Abstract
Electron collisional excitation cross sections of all allowed resonance transitions in Si II have been calculated using semi-classical perturbation theory. Allowance has been made for violation of the unitary condition on the S matrix due to coupling between all resonance states and the ground state. These cross sections were used to calculate the relative intensities of allowed and forbidden ultra-violet resonance lines of Si II emitted both by the sun and ZETA. The allowed line intensities are very sensitive functions of electron temperature while the forbidden lines are sensitive monitors of the electron density. Comparison with observation suggests the (rate averaged) cross sections are accurate to within a factor of two.
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 callMore From: Journal of Physics B: Atomic and Molecular Physics
Disclaimer: 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.
