Rp. Stafford et al., ELECTRON-IMPACT EXCITATION OF N-II - FINE-STRUCTURE COLLISION STRENGTHS AND MAXWELLIAN-AVERAGED RATE COEFFICIENTS, Monthly Notices of the Royal Astronomical Society, 268(3), 1994, pp. 816-820
An elaborate 13-state R-matrix calculation is performed to determine c
ollision strengths and Maxwellian-averaged rate coefficients for fine-
structure transitions in N II. Analytic fits are given for the rate co
efficients for the temperature range 5000-125 892 K, so that they may
be applied to investigations of solar/late-type stars and planetary ne
bulae.