Table 1: Comparison between NIST and our present GRASP energy levels (in Ryd) for Al XIII.
Index Configuration Level NIST^a GRASP^b GRASP^c

1... 1s ²S_1/2 0.000000 0.000000 0.000000

2... 2s ²S_1/2 126.986288 127.012604 126.988960

3... 2p ²P ${\rm ^o}_{1/2}$ 126.982560 127.012604 126.985252

4... 2p ²P ${\rm ^o}_{3/2}$ 127.078367 127.108200 127.081062

5... 3p ²P ${\rm ^o}_{1/2}$ 150.531340 150.561707 150.534500

6... 3s ²S_1/2 150.532450 150.561707 150.535599

7... 3d ²D_3/2 150.559680 150.590103 150.562851

8... 3p ²P ${\rm ^o}_{3/2}$ 150.559700 150.590103 150.562897

9... 3d ²D_5/2 150.569110 150.599503 150.572266

10... 4p ²P ${\rm ^o}_{1/2}$ 158.769510 158.800095 158.772842

11... 4s ²S _1/2 158.769980 158.800095 158.773300

12... 4d ²D_3/2 158.781460 158.811996 158.784805

13... 4p ²P ${\rm ^o}_{3/2}$ 158.781490 158.811996 158.784821

14... 4d ²D_5/2 158.785450 158.815994 158.788773

15... 4f ²F ${\rm ^o}_{5/2}$ 158.785440 158.815994 158.788773

16... 4f ²F ${\rm ^o}_{7/2}$ 158.787420 158.817993 158.790756

17... 5s ²S_1/2 162.581180 162.611603 162.584579

18... 5p ²P ${\rm ^o}_{1/2}$ 162.580950 162.611603 162.584351

19... 5d ²D_3/2 162.587060 162.617706 162.590469

20... 5p ²P ${\rm ^o}_{3/2}$ 162.587070 162.617706 162.590485

21... 5f ²F ${\rm ^o}_{5/2}$ 162.589000 162.619705 162.592499

22... 5d ²D_5/2 162.589000 162.619705 162.592499

23... 5g ²G_7/2 162.590100 162.620697 162.593521

24... 5f ²F ${\rm ^o}_{7/2}$ 162.590100 162.620697 162.593521

25... 5g ²G_9/2 162.590710 162.621307 162.594131

^a: NIST (http://www.physics.nist/gov/PhysRefData).
^b: Coulomb energies.
^c: QED corrected energies.

**Table 1:** Comparison between NIST and our present GRASP energy levels (in Ryd) for Al XIII.
Index	Configuration	Level	NIST^a	GRASP^b	GRASP^c
1...	1s	²S_1/2	0.000000	0.000000	0.000000
2...	2s	²S_1/2	126.986288	127.012604	126.988960
3...	2p	²P ${\rm ^o}_{1/2}$	126.982560	127.012604	126.985252
4...	2p	²P ${\rm ^o}_{3/2}$	127.078367	127.108200	127.081062
5...	3p	²P ${\rm ^o}_{1/2}$	150.531340	150.561707	150.534500
6...	3s	²S_1/2	150.532450	150.561707	150.535599
7...	3d	²D_3/2	150.559680	150.590103	150.562851
8...	3p	²P ${\rm ^o}_{3/2}$	150.559700	150.590103	150.562897
9...	3d	²D_5/2	150.569110	150.599503	150.572266
10...	4p	²P ${\rm ^o}_{1/2}$	158.769510	158.800095	158.772842
11...	4s	²S _1/2	158.769980	158.800095	158.773300
12...	4d	²D_3/2	158.781460	158.811996	158.784805
13...	4p	²P ${\rm ^o}_{3/2}$	158.781490	158.811996	158.784821
14...	4d	²D_5/2	158.785450	158.815994	158.788773
15...	4f	²F ${\rm ^o}_{5/2}$	158.785440	158.815994	158.788773
16...	4f	²F ${\rm ^o}_{7/2}$	158.787420	158.817993	158.790756
17...	5s	²S_1/2	162.581180	162.611603	162.584579
18...	5p	²P ${\rm ^o}_{1/2}$	162.580950	162.611603	162.584351
19...	5d	²D_3/2	162.587060	162.617706	162.590469
20...	5p	²P ${\rm ^o}_{3/2}$	162.587070	162.617706	162.590485
21...	5f	²F ${\rm ^o}_{5/2}$	162.589000	162.619705	162.592499
22...	5d	²D_5/2	162.589000	162.619705	162.592499
23...	5g	²G_7/2	162.590100	162.620697	162.593521
24...	5f	²F ${\rm ^o}_{7/2}$	162.590100	162.620697	162.593521
25...	5g	²G_9/2	162.590710	162.621307	162.594131

Source LaTeX | All tables | In the text

	1 Introduction
	2 Atomic structure
	3 Collision strengths
	4 Effective collision strengths
	5 Discussion and conclusions
	References