Electron-impact excitation of Ni II - Collision strengths and effective collision strengths for low-lying fine-structure forbidden transitions

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Table 1:

LS target state energies in Rydbergs relative to the $3{{\rm d}}^{9}$ $^{2}{{\rm D}}^{{\rm e}}$ Ni II ground state.
Term	LS Energy	S & C	Bautista
3d⁹ ²D $^{{\rm e}}$	0.0000	0.0000	0.0000
3d⁸4s ⁴F $^{{\rm e}}$	0.1098	0.0798	0.0287
3d⁸4s ²F $^{{\rm e}}$	0.1616	0.1236	0.0759
3d⁸4s ⁴P $^{{\rm e}}$	0.2735	0.2128	0.1956
3d⁸4s ²D $^{{\rm e}}$	0.2766	0.2181	0.1955
3d⁸4s ²P $^{{\rm e}}$	0.3258	0.2610	0.2422
3d⁸4s ²G $^{{\rm e}}$	0.3522	0.2908	0.2714
3d⁷4s² ⁴F $^{{\rm e}}$	0.5948	0.4699	0.3905
3d⁸4p ⁴D $^{{\rm o}}$	0.4881	0.4737	0.4096
3d⁸4p ⁴G $^{{\rm o}}$	0.5019	0.4855	0.4265

Notes. S & C are the observed values of Sugar & Corliss (1985) as presented in the NIST database and Bautista represents the theoretical predictions of Bautista (2004).

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