| Autor: |
Philip G. Burke, A.G. Sunderland, V.M. Burke, Brendan M. McLaughlin, C.J. Noble, Margaret Scott |
| Rok vydání: |
2002 |
| Předmět: |
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| Zdroj: |
Journal of Physics B: Atomic, Molecular and Optical Physics. 35:2755-2771 |
| ISSN: |
0953-4075 |
| Popis: |
Electron-impact excitation collision strengths of the iron peak element Fe III are calculated in the close-coupling approximation using the new R-matrix program PRMAT designed for present and future generations of parallel processors. In the present calculations 136 LS-coupled states arising from the 3d6, 3d54s and 3d54p configurations of Fe III are retained. The effective collision strengths, which are extremely important in the analysis of astrophysically important lines in the Fe III spectra, are obtained by averaging the electron collision strengths for a wide range of incident electron energies over a Maxwellian distribution of velocities. Results are presented for electron temperatures (Te in Kelvin) in the range 3.3≤log Te≤6.0, applicable to many laboratory and astrophysical plasmas for forbidden transitions within the 3d6 manifold. The present results provide improved results for important lines in the Fe III spectrum. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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