Abstract
We present sets of new atomic data for astrophysical and fusion plasma diagnostics. We calculate electron-impact excitation collision strengths and effective collisions strengths for the Be- and Mg-like isoelectronic sequences up to Krq+. We use the R-Matrix Intermediate-Coupling Frame Transformation method. We also study the accuracy of calculations for highly-excited states and give extrapolation rules to estimate the effective collision strengths and their error at high n. We demonstrate the importance of a well converged CI/CC expansion in the R-matrix calculation to get good quality results, mainly for highly-excited states.
| Original language | English |
|---|---|
| Article number | 052035 |
| Number of pages | 1 |
| Journal | Journal of Physics: Conference Series |
| Volume | 635 |
| Issue number | 5 |
| DOIs | |
| Publication status | Published - 7 Sept 2015 |
| Event | XXIX International Conference on Photonic, Electronic, and Atomic Collisions (ICPEAC) - Toledo, Spain Duration: 22 Jul 2015 → 28 Jul 2015 |
Keywords
- atoms
- electric excitation
- excited states
- impact ionization
- linear transformations
- matrix algebra
- plasma diagnostics
- collision strength
- electron-impact excitation
- fusion plasma diagnostics
- highly excited state
- intermediate coupling
- isoelectronic sequence
- R-matrix calculation
- transformation methods
- collisional plasmas