Table 1: Additional new classifications for Eu III.
Wavelength^a Int.^a $g_{\rm u}$ A^b Wavenumber^a Upper level Lower level $\log(g_{l}f)$ ^c

(Å) s^-1 cm^-1 E cm^-1 Parity, J E cm^-1 Parity, J

2173.592 10 5.287(8) 45 992.37 83 009 (o) 1.5 37 017 (e) 2.5 -0.425

2173.592 10 2.677(7) 45 992.37 82 954 (o) 4.5 36 962 (e) 5.5 -1.723

2184.972 2 1.951(8) 45 752.85 85 114 (o) 1.5 39 361 (e) 1.5 -0.854

2211.603 3 2.223(8) 45 201.97 84 563 (o) 0.5 39 361 (e) 1.5 -0.787

2223.127 10 3.772(8) 44 967.70 81 985 (o) 3.5 37 017 (e) 2.5 -0.552

2235.168 10 4.360(8) 44 725.48 82 954 (o) 4.5 38 229 (e) 3.5 -0.485

2236.321 3 2.148(6) 44 702.42 83 928 (o) 5.5 39 225 e) 4.5 -2.79

2269.453 5 2.091(8) 44 049.86 81 067 (o) 2.5 37 017 (e) 2.5 -0.790

2282.657 4 3.318(6) 43 795.08 83 928 (o) 5.5 40 133 (e) 5.5 -2.584

2337.443 3 2.283(6) 42 768.68 83 928 (o) 5.5 41 159 (e) 4.5 -2.727

2342.966 5 5.180(7) 42 667.88 74 847 (e) 6.5 32 179 (o) 5.5 -1.372

2350.382 10 3.958(7) 42 533.26 74 847 (e) 6.5 32 314 (o) 6.5 -1.486

2363.758 20 5.183(7) 42 292.59 74 246 (e) 5.5 31 954 (o) 4.5 -1.361

2376.423 10 5.027(7) 42 067.21 74 246 (e) 5.5 32 179 (o) 5.5 -1.370

2383.617 10 4.738(6) 41 940.25 83 928 (o) 5.5 41 987 (e) 5.5 -2.39

2389.107 20 6.415(6) 41 843.89 83 928 (o) 5.5 42 084 (e) 4.5 -2.259

2394.658 10 1.485(8) 41 746.89 80 253 (o) 1.5 38 506 (e) 0.5 -0.894

2407.300 20 5.566(7) 41 527.67 73 481 (e) 4.5 31 954 (o) 4.5 -1.313

2408.318 20 8.947(7) 41 510.13 73 583 (e) 7.5 32 073 (o) 8.5 -1.105

2420.435 2 1.817(7) 41 302.34 73 481 (e) 4.5 32 179 (o) 5.5 -1.795

2422.002 30 1.452(8) 41 275.62 73 583 (e) 7.5 32 307 (o) 7.5 -0.891

2426.733 5 7.473(4) 41 195.16 86 933 (o) 1.5 45 738 (e) 0.5 -4.178

2428.284 2 1.359(8) 41 168.84 86 933 (o) 1.5 45 765 (e) 1.5 -0.920

2433.646 10 1.301(6) 41 078.14 83 928 (o) 5.5 42 850 (e) 6.5 -2.936

2436.394 20 1.545(7) 41 031.82 73 339 (e) 6.5 32 314 (o) 6.5 -1.862

2436.772 10 7.519(6) 43 025.46 73 339 (e) 6.5 32 314 (o) 6.5 -2.174

2440.669 50 1.585(8) 40 959.95 73 033 (e) 8.5 32 073 (o) 8.5 -0.850

2441.710 3 1.424(8) 40 942.33 82 101 (o) 4.5 41 159 (e) 4.5 -0.895

2442.416 2 5.323(7) 40 930.67 79 437 (o) 1.5 38 506 (e) 0.5 -1.323

2454.726 2 3.102(6) 40 725.42 73 033 (e) 8.5 32 307 (o) 7.5 -2.555

2470.198 7 1.720(8) 40 470.34 86 208 (o) 0.5 45 738 (e) 0.5 -0.801

2476.447 20 6.721(7) 40 368.24 72 547 (e) 5.5 32 179 (o) 5.5 -1.208

2477.988 5 6.848(6) 40 343.14 72 416 (e) 7.5 32 073 (o) 8.5 -2.196

2484.735 2 1.065(7) 40 233.60 72 547 (e) 5.5 32 314 (o) 6.5 -2.005

2490.495 10 3.346(8) 40 140.55 87 820 (o) 2.5 47 680 (e) 1.5 -0.510

2492.481 10 2.174(7) 40 108.57 72 416 (e) 7.5 32 307 (o) 7.5 -1.691

2492.878 1 8.152(6) 40 102.19 72 416 (e) 7.5 32 314 (o) 6.5 -2.117

2505.507 2 4.984(7) 39 900.06 81 059 (o) 0.5 41 159 (e) 4.5 -1.329

2511.474 1 7.602(6) 39 805.27 71 984 (e) 6.5 32 179 (o) 5.5 -2.140

2519.596 2 6.734(6) 39 676.97 71 984 (e) 6.5 32 307 (o) 7.5 -2.190

2519.996 5 8.974(6) 39 670.66 71 984 (e) 6.5 32 314 (o) 6.5 -2.066

2560.474 5 1.819(8) 39 043.56 90 155 (o) 5.5 51 111 (e) 4.5 -0.745

2562.179 1 9.954(7) 39 017.58 85 114 (o) 1.5 46 096 (e) 0.5 -1.009

2562.993 5 1.495(8) 39 005.19 85 114 (o) 1.5 46 108 (e) 2.5 -0.831

2574.907 5 2.672(7) 38 824.72 84 563 (o) 0.5 45 738 (e) 0.5 -1.574

2575.689 2 3.870(5) 38 812.93 67 013 (e) 2.5 28 200 (o) 3.5 -3.413

2576.660 5 1.254(8) 38 798.31 84 563 (o) 0.5 45 765 (e) 1.5 -0.904

2585.671 1 1.108(8) 38 663.11 87 820 (o) 2.5 49 157 (e) 1.5 -0.956

2594.711 10 1.068(8) 38 528.41 87 820 (o) 2.5 49 292 (e) 3.5 -0.972

2594.711 10 3.874(7) 38 528.41 86 208 (o) 0.5 47 680 (e) 1.5 -1.410

2594.758 20 5.528(8) 38 527.72 89 639 (o) 4.5 51 111 (e) 4.5 -0.251

2600.950 2 7.038(6) 38 436.00 70 615 (e) 5.5 32 179 (o) 5.5 -2.147

2604.442 10 9.814(6) 38 384.47 67 013 (e) 2.5 28 628 (o) 2.5 -2.002

2610.092 30 4.020(7) 38 301.38 70 615 (e) 5.5 32 314 (o) 6.5 -1.387

2613.747 2 4.390(7) 38 247.84 85 928 (o) 2.5 47 680 (e) 1.5 -1.350

2616.259 20 5.186(7) 38 211.11 70 284 (e) 7.5 32 073 (o) 8.5 -1.273

2623.327 20 3.918(7) 38 108.16 70 416 (e) 6.5 32 307 (o) 7.5 -1.392

2623.762 5 1.197(7) 38 101.85 70 416 (e) 6.5 32 314 (o) 6.5 -1.907

2632.417 2 1.654(7) 37 976.57 70 284 (e) 7.5 32 307 (o) 7.5 -1.766

2634.329 2 1.693(8) 37 949.02 86 208 (o) 0.5 48 259 (e) 0.5 -0.754

2634.909 4 3.515(8) 37 940.67 85 114 (o) 1.5 47 173 (e) 2.5 -0.437

2645.218 20 5.720(7) 37 792.81 69 866 (e) 7.5 32 073 (o) 8.5 -1.220

2646.416 1 1.927(8) 37 775.71 86 933 (o) 1.5 49 157 (e) 1.5 -0.695

2661.736 5 1.495(7) 37 558.29 69 866 (e) 7.5 32 307 (o) 7.5 -1.800

2674.444 4 5.194(8) 37 379.83 86 208 (o) 0.5 48 828 (e) 1.5 -0.253

2697.894 2 2.090(7) 37 054.96 88 166 (o) 4.5 51 111 (e) 4.5 -1.640

2698.194 5 8.164(7) 37 050.84 86 208 (o) 0.5 49 157 (e) 1.5 -1.051

2743.943 10 3.377(7) 36 433.12 68 506 (e) 8.5 32 073 (o) 8.5 -1.417

2755.124 20 6.153(8) 36 285.28 85 114 (o) 1.5 48 828 (e) 1.5 -0.154

2761.724 10 2.503(7) 36 198.58 68 506 (e) 8.5 32 307 (o) 7.5 -1.543

2792.514 20 1.165(7) 35 799.46 70 615 (e) 5.5 34 816 (o) 4.5 -1.867

2793.995 5 5.516(6) 35 780.49 84 938 (o) 2.5 49 157 (e) 1.5 -2.191

2797.512 2 5.510(6) 35 735.51 67 915 (e) 6.5 32 179 (o) 5.5 -2.189

2807.589 1 4.802(6) 35 607.26 67 915 (e) 6.5 32 307 (o) 7.5 -2.245

2808.091 10 3.090(7) 35 600.89 67 915 (e) 6.5 32 314 (o) 6.5 -1.437

2808.353 2 6.626(6) 35 597.58 67 905 (e) 7.5 32 307 (o) 7.5 -2.105

2808.857 5 2.277(7) 35 591.19 67 905 (e) 7.5 32 314 (o) 6.5 -1.569

2814.141 3 1.275(7) 35 524.36 67 478 (e) 4.5 31 954 (o) 4.5 -1.819

2821.780 3 1.960(7) 35 428.19 67 607 (e) 5.5 32 179 (o) 5.5 -1.633

2831.456 3 5.857(6) 35 307.13 67 261 (e) 5.5 31 954 (o) 4.5 -2.152

2832.106 1 4.191(6) 35 299.03 67 478 (e) 4.5 32 179 (o) 5.5 -2.298

2832.545 2 4.494(6) 35 293.56 67 607 (e) 5.5 32 314 (o) 6.5 -2.270

2848.551 5 1.289(7) 35 095.25 67 274 (e) 6.5 32 179 (o) 5.5 -1.805

2858.999 5 1.044(7) 34 967.00 67 274 (e) 6.5 32 307 (o) 7.5 -1.893

2860.619 3 1.437(6) 34 947.21 67 261 (e) 5.5 32 314 (o) 6.5 -2.755

2889.854 2 3.714(7) 34 593.68 85 705 (o) 3.5 51 111 (e) 4.5 -1.330

2956.347 4 6.533(6) 33 815.64 66 123 (e) 7.5 32 307 (o) 7.5 -2.071

2956.902 10 1.997(7) 33 809.30 66 123 (e) 7.5 32 314 (o) 6.5 -1.586

3000.500 3 4.759(6) 33 318.06 65 497 (e) 5.5 32 179 (o) 5.5 -2.186

3012.675 1 2.938(5) 33 183.43 65 497 (e) 5.5 32 314 (o) 6.5 -3.393

3032.839 40 1.634(7) 32 962.81 83 928 (o) 5.5 50 965 (e) 6.5 -1.646

7005.747 1 4.967(5) 14 280.06 49 086 (e) 5.5 34 816 (o) 4.5 -2.449

7750.594 2 7.669(5) 12 898.69 47 714 (e) 4.5 34 816 (o) 4.5 -2.166

^a Experimental wavelengths, wavenumbers and intensities are from Sugar & Spector (1974).
^b Weighted emission transition probabilities $g_{\rm u} A$ are noted as m(n) for $m\times10^n$ .
^c The last column refers to absorption oscillator strengths.

**Table 1:** Additional new classifications for Eu III.
Wavelength^a	Int.^a	$g_{\rm u}$ A^b	Wavenumber^a	Upper level	Lower level	$\log(g_{l}f)$ ^c
(Å)		s^-1	cm^-1	E cm^-1	Parity, J	E cm^-1	Parity, J
2173.592	10	5.287(8)	45 992.37	83 009	(o) 1.5	37 017	(e) 2.5	-0.425
2173.592	10	2.677(7)	45 992.37	82 954	(o) 4.5	36 962	(e) 5.5	-1.723
2184.972	2	1.951(8)	45 752.85	85 114	(o) 1.5	39 361	(e) 1.5	-0.854
2211.603	3	2.223(8)	45 201.97	84 563	(o) 0.5	39 361	(e) 1.5	-0.787
2223.127	10	3.772(8)	44 967.70	81 985	(o) 3.5	37 017	(e) 2.5	-0.552
2235.168	10	4.360(8)	44 725.48	82 954	(o) 4.5	38 229	(e) 3.5	-0.485
2236.321	3	2.148(6)	44 702.42	83 928	(o) 5.5	39 225	e) 4.5	-2.79
2269.453	5	2.091(8)	44 049.86	81 067	(o) 2.5	37 017	(e) 2.5	-0.790
2282.657	4	3.318(6)	43 795.08	83 928	(o) 5.5	40 133	(e) 5.5	-2.584
2337.443	3	2.283(6)	42 768.68	83 928	(o) 5.5	41 159	(e) 4.5	-2.727
2342.966	5	5.180(7)	42 667.88	74 847	(e) 6.5	32 179	(o) 5.5	-1.372
2350.382	10	3.958(7)	42 533.26	74 847	(e) 6.5	32 314	(o) 6.5	-1.486
2363.758	20	5.183(7)	42 292.59	74 246	(e) 5.5	31 954	(o) 4.5	-1.361
2376.423	10	5.027(7)	42 067.21	74 246	(e) 5.5	32 179	(o) 5.5	-1.370
2383.617	10	4.738(6)	41 940.25	83 928	(o) 5.5	41 987	(e) 5.5	-2.39
2389.107	20	6.415(6)	41 843.89	83 928	(o) 5.5	42 084	(e) 4.5	-2.259
2394.658	10	1.485(8)	41 746.89	80 253	(o) 1.5	38 506	(e) 0.5	-0.894
2407.300	20	5.566(7)	41 527.67	73 481	(e) 4.5	31 954	(o) 4.5	-1.313
2408.318	20	8.947(7)	41 510.13	73 583	(e) 7.5	32 073	(o) 8.5	-1.105
2420.435	2	1.817(7)	41 302.34	73 481	(e) 4.5	32 179	(o) 5.5	-1.795
2422.002	30	1.452(8)	41 275.62	73 583	(e) 7.5	32 307	(o) 7.5	-0.891
2426.733	5	7.473(4)	41 195.16	86 933	(o) 1.5	45 738	(e) 0.5	-4.178
2428.284	2	1.359(8)	41 168.84	86 933	(o) 1.5	45 765	(e) 1.5	-0.920
2433.646	10	1.301(6)	41 078.14	83 928	(o) 5.5	42 850	(e) 6.5	-2.936
2436.394	20	1.545(7)	41 031.82	73 339	(e) 6.5	32 314	(o) 6.5	-1.862
2436.772	10	7.519(6)	43 025.46	73 339	(e) 6.5	32 314	(o) 6.5	-2.174
2440.669	50	1.585(8)	40 959.95	73 033	(e) 8.5	32 073	(o) 8.5	-0.850
2441.710	3	1.424(8)	40 942.33	82 101	(o) 4.5	41 159	(e) 4.5	-0.895
2442.416	2	5.323(7)	40 930.67	79 437	(o) 1.5	38 506	(e) 0.5	-1.323
2454.726	2	3.102(6)	40 725.42	73 033	(e) 8.5	32 307	(o) 7.5	-2.555
2470.198	7	1.720(8)	40 470.34	86 208	(o) 0.5	45 738	(e) 0.5	-0.801
2476.447	20	6.721(7)	40 368.24	72 547	(e) 5.5	32 179	(o) 5.5	-1.208
2477.988	5	6.848(6)	40 343.14	72 416	(e) 7.5	32 073	(o) 8.5	-2.196
2484.735	2	1.065(7)	40 233.60	72 547	(e) 5.5	32 314	(o) 6.5	-2.005
2490.495	10	3.346(8)	40 140.55	87 820	(o) 2.5	47 680	(e) 1.5	-0.510
2492.481	10	2.174(7)	40 108.57	72 416	(e) 7.5	32 307	(o) 7.5	-1.691
2492.878	1	8.152(6)	40 102.19	72 416	(e) 7.5	32 314	(o) 6.5	-2.117
2505.507	2	4.984(7)	39 900.06	81 059	(o) 0.5	41 159	(e) 4.5	-1.329
2511.474	1	7.602(6)	39 805.27	71 984	(e) 6.5	32 179	(o) 5.5	-2.140
2519.596	2	6.734(6)	39 676.97	71 984	(e) 6.5	32 307	(o) 7.5	-2.190
2519.996	5	8.974(6)	39 670.66	71 984	(e) 6.5	32 314	(o) 6.5	-2.066
2560.474	5	1.819(8)	39 043.56	90 155	(o) 5.5	51 111	(e) 4.5	-0.745
2562.179	1	9.954(7)	39 017.58	85 114	(o) 1.5	46 096	(e) 0.5	-1.009
2562.993	5	1.495(8)	39 005.19	85 114	(o) 1.5	46 108	(e) 2.5	-0.831
2574.907	5	2.672(7)	38 824.72	84 563	(o) 0.5	45 738	(e) 0.5	-1.574
2575.689	2	3.870(5)	38 812.93	67 013	(e) 2.5	28 200	(o) 3.5	-3.413
2576.660	5	1.254(8)	38 798.31	84 563	(o) 0.5	45 765	(e) 1.5	-0.904
2585.671	1	1.108(8)	38 663.11	87 820	(o) 2.5	49 157	(e) 1.5	-0.956
2594.711	10	1.068(8)	38 528.41	87 820	(o) 2.5	49 292	(e) 3.5	-0.972
2594.711	10	3.874(7)	38 528.41	86 208	(o) 0.5	47 680	(e) 1.5	-1.410
2594.758	20	5.528(8)	38 527.72	89 639	(o) 4.5	51 111	(e) 4.5	-0.251
2600.950	2	7.038(6)	38 436.00	70 615	(e) 5.5	32 179	(o) 5.5	-2.147
2604.442	10	9.814(6)	38 384.47	67 013	(e) 2.5	28 628	(o) 2.5	-2.002
2610.092	30	4.020(7)	38 301.38	70 615	(e) 5.5	32 314	(o) 6.5	-1.387
2613.747	2	4.390(7)	38 247.84	85 928	(o) 2.5	47 680	(e) 1.5	-1.350
2616.259	20	5.186(7)	38 211.11	70 284	(e) 7.5	32 073	(o) 8.5	-1.273
2623.327	20	3.918(7)	38 108.16	70 416	(e) 6.5	32 307	(o) 7.5	-1.392
2623.762	5	1.197(7)	38 101.85	70 416	(e) 6.5	32 314	(o) 6.5	-1.907
2632.417	2	1.654(7)	37 976.57	70 284	(e) 7.5	32 307	(o) 7.5	-1.766
2634.329	2	1.693(8)	37 949.02	86 208	(o) 0.5	48 259	(e) 0.5	-0.754
2634.909	4	3.515(8)	37 940.67	85 114	(o) 1.5	47 173	(e) 2.5	-0.437
2645.218	20	5.720(7)	37 792.81	69 866	(e) 7.5	32 073	(o) 8.5	-1.220
2646.416	1	1.927(8)	37 775.71	86 933	(o) 1.5	49 157	(e) 1.5	-0.695
2661.736	5	1.495(7)	37 558.29	69 866	(e) 7.5	32 307	(o) 7.5	-1.800
2674.444	4	5.194(8)	37 379.83	86 208	(o) 0.5	48 828	(e) 1.5	-0.253
2697.894	2	2.090(7)	37 054.96	88 166	(o) 4.5	51 111	(e) 4.5	-1.640
2698.194	5	8.164(7)	37 050.84	86 208	(o) 0.5	49 157	(e) 1.5	-1.051
2743.943	10	3.377(7)	36 433.12	68 506	(e) 8.5	32 073	(o) 8.5	-1.417
2755.124	20	6.153(8)	36 285.28	85 114	(o) 1.5	48 828	(e) 1.5	-0.154
2761.724	10	2.503(7)	36 198.58	68 506	(e) 8.5	32 307	(o) 7.5	-1.543
2792.514	20	1.165(7)	35 799.46	70 615	(e) 5.5	34 816	(o) 4.5	-1.867
2793.995	5	5.516(6)	35 780.49	84 938	(o) 2.5	49 157	(e) 1.5	-2.191
2797.512	2	5.510(6)	35 735.51	67 915	(e) 6.5	32 179	(o) 5.5	-2.189
2807.589	1	4.802(6)	35 607.26	67 915	(e) 6.5	32 307	(o) 7.5	-2.245
2808.091	10	3.090(7)	35 600.89	67 915	(e) 6.5	32 314	(o) 6.5	-1.437
2808.353	2	6.626(6)	35 597.58	67 905	(e) 7.5	32 307	(o) 7.5	-2.105
2808.857	5	2.277(7)	35 591.19	67 905	(e) 7.5	32 314	(o) 6.5	-1.569
2814.141	3	1.275(7)	35 524.36	67 478	(e) 4.5	31 954	(o) 4.5	-1.819
2821.780	3	1.960(7)	35 428.19	67 607	(e) 5.5	32 179	(o) 5.5	-1.633
2831.456	3	5.857(6)	35 307.13	67 261	(e) 5.5	31 954	(o) 4.5	-2.152
2832.106	1	4.191(6)	35 299.03	67 478	(e) 4.5	32 179	(o) 5.5	-2.298
2832.545	2	4.494(6)	35 293.56	67 607	(e) 5.5	32 314	(o) 6.5	-2.270
2848.551	5	1.289(7)	35 095.25	67 274	(e) 6.5	32 179	(o) 5.5	-1.805
2858.999	5	1.044(7)	34 967.00	67 274	(e) 6.5	32 307	(o) 7.5	-1.893
2860.619	3	1.437(6)	34 947.21	67 261	(e) 5.5	32 314	(o) 6.5	-2.755
2889.854	2	3.714(7)	34 593.68	85 705	(o) 3.5	51 111	(e) 4.5	-1.330
2956.347	4	6.533(6)	33 815.64	66 123	(e) 7.5	32 307	(o) 7.5	-2.071
2956.902	10	1.997(7)	33 809.30	66 123	(e) 7.5	32 314	(o) 6.5	-1.586
3000.500	3	4.759(6)	33 318.06	65 497	(e) 5.5	32 179	(o) 5.5	-2.186
3012.675	1	2.938(5)	33 183.43	65 497	(e) 5.5	32 314	(o) 6.5	-3.393
3032.839	40	1.634(7)	32 962.81	83 928	(o) 5.5	50 965	(e) 6.5	-1.646
7005.747	1	4.967(5)	14 280.06	49 086	(e) 5.5	34 816	(o) 4.5	-2.449
7750.594	2	7.669(5)	12 898.69	47 714	(e) 4.5	34 816	(o) 4.5	-2.166

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