Table 5: Measured and predicted lifetimes (ms) for some of the levels in Fe X. Measured values are from: (1) Moehs et al. (2001); (2) Träbert (2004); (3) Träbert (1996); (4) Träbert et al. (2003); (5) Moehs et al. (2000); (6) Träbert et al. (2002). Note the excellent agreement between measured and predicted lifetimes. The predicted values have been calculated here with SUPERSTRUCTURE and adjusted energies.

i		 Upper level Measured (ms) Calc.

2		 3s23p5 2P $_{1/2}^{\rm o}$ 13.64 $^{(1)}\pm0.25$, 14.4 $^{(2)}\pm0.1$ 14.5
3 3s 3p6 2S $_{1/2}^{\rm e}$ 2.7 $^{(3)}\pm0.2 \times 10^{-7}$ $2.1 \times 10^{-7}$
8 3s23p4 (3P) 3d 4F $_{9/2}^{\rm e}$ 110 $^{(4)}\pm5 $, 85.7 $^{(5)}\pm9.2$ 89.2
10 3s23p4 (3P) 3d 4F $_{7/2}^{\rm e}$ 58 $^{(6)}\pm10 $, 93 $^{(5)}\pm30$ 75.3
18 3s23p4 (3P) 3d 2F $_{7/2}^{\rm e}$ 16 $^{(6)}\pm1.6$ 12.4
20 3s2 3p4 (1D) 3d 2G $_{9/2}^{\rm e}$ 17.8 $^{(5)}\pm3.1$ 13.7
24 3s23p4 (1D) 3d 2F $_{7/2}^{\rm e}$ 4.6 $^{(6)}\pm0.4$ 4.8


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