Table 1: Target levels of Ca XV and their threshold energies (in Ryd).
Index Configuration Level Expt.^a GRASP^b

1 1s²2s²2p² ³P₀ 0.0000 0.0000

2 1s²2s²2p² ³P₁ 0.1600 0.1601

3 1s²2s²2p² ³P₂ 0.3273 0.3281

4 1s²2s²2p² ¹D₂ 0.9896 1.0138

5 1s²2s²2p² ¹S₀ 1.8009 1.7695

6 1s²2s2p³ ⁵S $_2^{\rm o}$ 2.4985 2.3928

7 1s²2s2p³ ³D $_2^{\rm o}$ 4.5261 4.5364

8 1s²2s2p³ ³D ${_1}^{\rm o}$ 4.5344 4.5456

9 1s²2s2p³ ³D ${_3}^{\rm o}$ 4.5585 4.5677

10 1s²2s2p³ ³P ${_0}^{\rm o}$ 5.3011 5.3144

11 1s²2s2p³ ³P ${_1}^{\rm o}$ 5.3112 5.3246

12 1s²2s2p³ ³P $_2^{\rm o}$ 5.3369 5.3500

13 1s²2s2p³ ³S ${_1}^{\rm o}$ 6.6423 6.7940

14 1s²2s2p³ ¹D $_2^{\rm o}$ 6.6497 6.7971

15 1s²2s2p³ ¹P ${_1}^{\rm o}$ 7.4211 7.5695

16 1s²2p⁴ ³P₂ 10.0929 10.2321

17 1s²2p⁴ ³P₁ 10.3326 10.4681

18 1s²2p⁴ ³P₀ 10.3897 10.5269

19 1s²2p⁴ ¹D₂ 10.8915 11.1048

20 1s²2p⁴ ¹S₀ 12.3397 12.5692

21 1s²2s²2p3s ³P ${_0}^{\rm o}$ ...... 37.4440

22 1s²2s²2p3s ³P ${_1}^{\rm o}$ ...... 37.4905

23 1s²2s²2p3s ³P $_2^{\rm o}$ ...... 37.7821

24 1s²2s²2p3s ¹P ${_1}^{\rm o}$ ...... 37.9481

25 1s²2s²2p3p ³D₁ ...... 38.5909

26 1s²2s²2p3p ³D₂ ...... 38.8009

27 1s²2s²2p3p ¹P₁ ...... 38.8099

28 1s²2s²2p3p ³D₃ ...... 39.0419

29 1s²2s²2p3p ³S₁ ...... 39.0900

30 1s²2s²2p3p ³P₀ ...... 39.1045

31 1s²2s²2p3p ³P₁ ...... 39.2720

32 1s²2s²2p3p ³P₂ ...... 39.3384

33 1s²2s²2p3p ¹D₂ ...... 39.6112

34 1s²2s²2p3d ³F $_2^{\rm o}$ 39.7586 39.9877

35 1s²2s²2p3p ¹S₀ ...... 40.0342

36 1s²2s²2p3d ³F ${_3}^{\rm o}$ 39.9044 40.1271

37 1s²2s²2p3d ¹D $_2^{\rm o}$ ...... 40.1990

38 1s²2s²2p3d ³F ${_4}^{\rm o}$ ...... 40.3352

39 1s²2s²2p3d ³D ${_1}^{\rm o}$ 40.0866 40.3696

40 1s²2s²2p3d ³D $_2^{\rm o}$ 40.2051 40.4639

41 1s²2s²2p3d ³D ${_3}^{\rm o}$ 40.3327 40.5833

42 1s²2s²2p3d ³P $_2^{\rm o}$ 40.4147 40.6537

43 1s²2s²2p3d ³P ${_1}^{\rm o}$ 40.4147 40.6719

44 1s²2s²2p3d ³P ${_0}^{\rm o}$ ...... 40.6853

45 1s²2s²2p3d ¹P ${_1}^{\rm o}$ 40.7610 41.0566

46 1s²2s²2p3d ¹F ${_3}^{\rm o}$ 40.7792 41.0685

**Table 1:** Target levels of Ca XV and their threshold energies (in Ryd).
Index	Configuration	Level	Expt.^a	GRASP^b
1	1s²2s²2p²	³P₀	0.0000	0.0000
2	1s²2s²2p²	³P₁	0.1600	0.1601
3	1s²2s²2p²	³P₂	0.3273	0.3281
4	1s²2s²2p²	¹D₂	0.9896	1.0138
5	1s²2s²2p²	¹S₀	1.8009	1.7695
6	1s²2s2p³	⁵S $_2^{\rm o}$	2.4985	2.3928
7	1s²2s2p³	³D $_2^{\rm o}$	4.5261	4.5364
8	1s²2s2p³	³D ${_1}^{\rm o}$	4.5344	4.5456
9	1s²2s2p³	³D ${_3}^{\rm o}$	4.5585	4.5677
10	1s²2s2p³	³P ${_0}^{\rm o}$	5.3011	5.3144
11	1s²2s2p³	³P ${_1}^{\rm o}$	5.3112	5.3246
12	1s²2s2p³	³P $_2^{\rm o}$	5.3369	5.3500
13	1s²2s2p³	³S ${_1}^{\rm o}$	6.6423	6.7940
14	1s²2s2p³	¹D $_2^{\rm o}$	6.6497	6.7971
15	1s²2s2p³	¹P ${_1}^{\rm o}$	7.4211	7.5695
16	1s²2p⁴	³P₂	10.0929	10.2321
17	1s²2p⁴	³P₁	10.3326	10.4681
18	1s²2p⁴	³P₀	10.3897	10.5269
19	1s²2p⁴	¹D₂	10.8915	11.1048
20	1s²2p⁴	¹S₀	12.3397	12.5692
21	1s²2s²2p3s	³P ${_0}^{\rm o}$	......	37.4440
22	1s²2s²2p3s	³P ${_1}^{\rm o}$	......	37.4905
23	1s²2s²2p3s	³P $_2^{\rm o}$	......	37.7821
24	1s²2s²2p3s	¹P ${_1}^{\rm o}$	......	37.9481
25	1s²2s²2p3p	³D₁	......	38.5909
26	1s²2s²2p3p	³D₂	......	38.8009
27	1s²2s²2p3p	¹P₁	......	38.8099
28	1s²2s²2p3p	³D₃	......	39.0419
29	1s²2s²2p3p	³S₁	......	39.0900
30	1s²2s²2p3p	³P₀	......	39.1045
31	1s²2s²2p3p	³P₁	......	39.2720
32	1s²2s²2p3p	³P₂	......	39.3384
33	1s²2s²2p3p	¹D₂	......	39.6112
34	1s²2s²2p3d	³F $_2^{\rm o}$	39.7586	39.9877
35	1s²2s²2p3p	¹S₀	......	40.0342
36	1s²2s²2p3d	³F ${_3}^{\rm o}$	39.9044	40.1271
37	1s²2s²2p3d	¹D $_2^{\rm o}$	......	40.1990
38	1s²2s²2p3d	³F ${_4}^{\rm o}$	......	40.3352
39	1s²2s²2p3d	³D ${_1}^{\rm o}$	40.0866	40.3696
40	1s²2s²2p3d	³D $_2^{\rm o}$	40.2051	40.4639
41	1s²2s²2p3d	³D ${_3}^{\rm o}$	40.3327	40.5833
42	1s²2s²2p3d	³P $_2^{\rm o}$	40.4147	40.6537
43	1s²2s²2p3d	³P ${_1}^{\rm o}$	40.4147	40.6719
44	1s²2s²2p3d	³P ${_0}^{\rm o}$	......	40.6853
45	1s²2s²2p3d	¹P ${_1}^{\rm o}$	40.7610	41.0566
46	1s²2s²2p3d	¹F ${_3}^{\rm o}$	40.7792	41.0685

a. Sugar & Corliss (1985).
b. Aggarwal et al. (1997).

Source LaTeX | All tables | In the text