Here you find various information on the brightest lines, ordered in wavelength:
Wavelengths (Angstroms); weighted oscillator strengths (gf); transition probabilities (A); intensities (normalised) at 10⁶ , 10¹⁰, 10¹⁵, 10²⁰ cm^-3; together with:
Configuration; Term; Index of the level (1=ground); Energy (observed if available - otherwise theoretical); of the lower (l) and upper levels (u)
Note that intensities have been calculated at log T[K]=5.60, where the ion fraction peaks in ionization equilibrium. Only lines brighter than 0.001 the strongest line (at all densities) are retained. Lines flagged with a "*" before their wavelengths only have theoretical energy levels. Please note that their wavelengths are not very accurate.

Wavelength

gf

Aul

R

R

R

R

Cl

Tl

Cu

Tu

Il

Iu

El

Eu

(A)

(s-1)

(106)

(1010)

(1015)

(1020)

(cm-1)

(cm-1)

988.7090

1.16e-05

1.65e+04

1.23e-01

7.52e-02

4.41e-04

1.31e-07

2s2 2p2

3P2

2s 2p3

5S2

3

6

1856

102998

1356.3290

3.68e-09

1.34e+01

4.27e-02

9.80e-03

1.10e-07

1.68e-11

2s2 2p2

3P1

2s2 2p2

1S0

2

5

694.6

74423

* 1583.5840

1.51e+00

4.46e+08

1.69e-03

2.19e-03

2.01e-03

1.42e-04

2s2 2p 3p

3D3

2s2 2p 3d

3F4

28

41

867708

930855.9

1671.9611

1.12e+00

8.20e+08

6.95e-04

1.79e-03

1.67e-03

1.66e-04

2s2 2p 3s

1P1

2s2 2p 3p

1D2

24

33

817740

877550

2569.5510

3.31e-09

3.32e+00

5.60e-03

1.29e-03

1.45e-08

2.20e-12

2s2 2p2

1D2

2s2 2p2

1S0

4

5

35505.7

74423

2872.6470

2.65e-09

4.31e-01

5.58e-02

1.16e-03

1.17e-08

1.47e-12

2s2 2p2

3P1

2s2 2p2

1D2

2

4

694.6

35505.7

2971.7949

7.69e-09

1.17e+00

1.46e-01

3.05e-03

3.06e-08

3.87e-12

2s2 2p2

3P2

2s2 2p2

1D2

3

4

1856

35505.7

86102.9766

1.17e-07

2.09e-02

2.12e-02

2.90e-06

2.73e-11

2.72e-15

2s2 2p2

3P1

2s2 2p2

3P2

2

3

694.6

1856

143967.7500

5.66e-08

6.15e-03

7.40e-03

3.08e-07

2.91e-12

2.88e-16

2s2 2p2

3P0

2s2 2p2

3P1

1

2

0

694.6

Created by Giulio Del Zanna on Wed Apr 16 17:43:42 2025