Extended transition rates and lifetimes in Al I and Al II from systematic multiconfiguration calculations

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Volume 621 (January 2019)

A&A, 621 (2019) A16

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Table 7.

Comparison between computed and observed transition rates A in s⁻¹ for selected transitions in Al II.

Upper	Lower	A_RCI^a	A_theor^b^c	A_theor^e^f	A_obs^d^h^g
	3s²¹S₀	3.054E+03	3.277E+03^b		3.30E+03^h
	3s²¹S₀	1.404E+09	1.400E+09^b	1.486E+09^f	1.45E+09^g
3s4s ³S₁	3s3p	8.612E+07	8.572E+07^b
		2.555E+08	2.547E+08^b
		4.173E+08	4.162E+08^b
3s4s ¹S₀		3.422E+08	3.455E+08^b	3.408E+08^f
3p²¹D₂		2.523E+05	3.804E+05^b	3.980E+05^f	1.84E+04^d
		1.790E+04	2.016E+04^b		0.19E+04^d
		2.827E+04	3.141E+04^b		0.30E+04^d
3p²³P₀		1.236E+09	1.235E+09^b
3p²³P₁		4.148E+08	4.144E+08^b
		3.058E+08	3.062E+08^b
		5.170E+08	5.167E+08^b
3p²³P₂		3.145E+08	3.144E+08^b
		9.264E+08	9.272E+08^b
3p²¹S₀		1.020E+09	6.738E+08^b
		5.021E+08	3.399E+07^b
3s3d ³D₂		8.977E+08	9.072E+08^b
		3.019E+08	3.046E+08^b
3s3d ³D₃		1.197E+09	1.208E+09^b
3s3d ¹D₂		1.388E+09	1.429E+09^b	1.388E+09^f
	3s4s ³S₁	5.639E+07	5.705E+07^b
	3s3d ³D₁	1.556E+07	1.520E+07^b
	3s4s ³S₁	5.649E+07	5.724E+07^b
	3s3d ³D₁	3.905E+06	3.816E+06^b
	3s3d ³D₂	1.172E+07	1.146E+07^b
	3s4s ³S₁	5.683E+07	5.762E+07^b
	3s3d ³D₁	1.568E+05	1.541E+05^b
	3s3d ³D₂	2.361E+06	2.312E+06^b
	3s3d ³D₃	1.319E+07	1.294E+07^b
	3s²¹S₀	1.527E+06	0.981E+06^b	5.079E+06^f
	3p²¹D₂	5.835E+07	5.897E+07^b	6.307E+07^f
	3s4s ¹S₀	3.109E+07	2.965E+07^b	3.111E+07^f
	3s3d ³D₁	2.956E+08	2.07E+08^c	2.14E+08^e
	3s3d ³D₂	3.174E+08	2.19E+08^c	2.25E+08^e
	3s3d ³D₃	3.794E+08	2.47E+08^c	2.54E+08^e
	3s3d ³D₁	1.981E+08	1.97E+08^c	1.98E+08^e
	3s3d ³D₂	2.096E+08	2.09E+08^c	2.07E+08^e
	3s3d ³D₃	2.360E+08	2.35E+08^c	2.33E+08^e
	3s3d ³D₁	2.801E+07	2.40E+07^c	2.50E+07^e
	3s3d ³D₃	3.438E+07	2.85E+07^c	2.90E+07^e
	3s3d ³D₁	1.957E+07	2.90E+07^c	3.10E+07^e
	3s4d ³D₁	1.116E+07	1.07E+07^c	1.00E+07^e
	3s3d ³D₂	1.910E+07	3.07E+07^c	3.30E+07^e
	3s4d ³D₂	1.200E+07	1.14E+07^c	1.10E+07^e
	3s3d ³D₃	1.920E+07	3.46E+07^c	3.70E+07^e
	3s4d ³D₃	1.367E+07	1.28E+07^c	1.20E+07^e

Notes. The present values from the RCI calculations are given in Col. 3. In the next two columns, theoretical values from former MCHF-BP, close coupling (CC), configuration interaction (CI), and B-spline configuration interaction (BSCI) calculations are given. The last column contains the results from experimental observations. All theoretical transition rates are presented in length form.

References.

Present calculations;

^(b)

Froese Fischer et al. (2006);

^(c)

Butler et al. (1993);

^(d)

Vujnović et al. (2002);

^(e)

Chang & Wang (1987);

^(f)

Chang & Fang (1995);

^(g)

Kernahan et al. (1979), Smith (1970), Berry et al. (1970), Head et al. (1976);

^(h)

Träbert et al. (1999), Johnson et al. (1986).

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