Oscillator Strengths and Electron Excitation Collision Strengths for Fe XII and Fe XIV

Details Oscillator Strengths and Electron Excitation Collision Strengths for Fe XII and Fe XIV Oscillator Strengths and Electron Excitation Collision Strengths for Fe XII and Fe XIV

Jan 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009aas...21346601t&link_type=abstract

American Astronomical Society, AAS Meeting #213, #466.01; Bulletin of the American Astronomical Society, Vol. 41, p.413

Astronomy and Astrophysics

Astronomy

Scientific paper

Oscillator strengths and electron impact excitation collision strengths for fine-structure transitions of atomic ions are important to understand physical processes and conditions in various astrophysical plasmas. Several line intensity ratios involving Fe XII and Fe XIV lines are density and/or temperature sensitive and can be used for diagnosing the physical conditions of different solar regions, stellar atmospheres, and Seyfert galaxies. We have included 135 Fe XIV and 133 Fe XII target levels in the close-coupling expansion in our collision calculation using the Breit-Pauli R-matrix approach. An accurate representation of target levels has been obtained using spectroscopic and correlation radial functions. The atomic wave functions give excitation energies which are in excellent agreement with experiment. Oscillator strengths and transition probabilities normally compare well with previous reliable calculations. The effective collision strengths have been calculated by integrating total resonant and non-resonant collision strengths over a Maxwellian distribution of electron energies and over a wide temperature range suitable for modeling of astrophysical plasmas. Significant differences in collision strengths are noted with previous calculations.
This research work is supported by NASA under grant NNG06-GD39G from the Astronomy and Physics Research Analysis program.

Affiliated with

Also associated with

No associations

Rating

Oscillator Strengths and Electron Excitation Collision Strengths for Fe XII and Fe XIV does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Oscillator Strengths and Electron Excitation Collision Strengths for Fe XII and Fe XIV, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Oscillator Strengths and Electron Excitation Collision Strengths for Fe XII and Fe XIV will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1706259