| Electron-excitation of forbidden transitions |
| in V-like ions Mn-III, Fe-IV, Co-V and Ni-VI |
| Berrington.KA, Pelan.JC |
| Astronomy & Astrophysics Supplement Series, 1995, Vol.114, No.2, pp.367-371 |
Electron excitation collision strengths for fine-structure
transitions involving the four lowest 3d
terms
(
S, 
G, 
, D)
in vanadium-like ions Mn III, Fe IV, Co V and Ni VI
are calculated using R-matrix techniques. All five sextet and
quartet 3d target terms are included in the expansion of the
total wavefunction. Fine-structure collision strengths are
obtained from an algebraic transformation of the reactance
matrices. These collision strengths are then averaged over a
Maxwellian velocity distribution to obtain effective collision
strengths as a function of electron temperature. To our
knowledge, these are the first published data for these
processes.
NB There is an erratum for Table 5 of this paper for Fe IV.
See Errata.