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Paper XL

Electron impact excitation of the Fe XIV EUV transitions
P.J. Storey, H.E. Mason, P.R. Young
Astronomy & Astrophysics Supplement Series, 2000, Vol.141, pp.285-296

We calculate the collision strengths and thermally averaged collision strengths for electron excitation between the forty energetically lowest levels of Fe$^{13+}$. The scattering calculation is more complete than any previous work on this ion and significant differences are found in the excitation rates for many of the extreme ultra-violet (EUV) transitions, compared to earlier work. A detailed comparison is made between predicted line intensity ratios and those observed in solar coronal spectra which shows that several outstanding discrepancies are resolved by the new atomic data.