Importance of level mixing on accurate [Fe II] transition rates

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Table 4

Lifetimes τ(s) of six metastable levels.

Configuration	Term	Experiment	Garstang	Quinet	Quinet	Present
				SST	HFR	fine tuned

3d⁵4s²	a ⁶S_2.5	0.23(3)^p	0.326	0.262	0.220	0.233
3d⁶(³G)4s	a ⁴G_5.5	0.75(10)^q	0.852	0.774	0.704	0.958
3d⁶(³G)4s	a ⁴G_4.5	0.65(2)^r	0.856	0.755	0.694	0.870
3d⁶(³H)4s	b ²H_5.5	3.8(3)^r	10.1	6.59	5.20	3.701
3d⁶(³D)4s	b ⁴D_0.5	0.54(3)^q	0.677	0.630	0.550	0.626
3d⁶(³D)4s	b ⁴D_3.5	0.53(3)^p	0.618	0.567	0.500	0.577

τ _R		5.07	11.9	8.51	7.39	3.86

Notes. Experimental uncertainties are in brackets. τ_R is the ratio of the lifetime of b ²H_5.5 to a ⁴G_5.5.

^(p)

Rostohar et al. (2001),

^(q)

Gurell et al. (2009),

^(r)

Hartman et al. (2003).

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