CHIANTI

An Atomic Database for Spectroscopic Diagnostics of Astrophysical Plasmas.


N IV - VERSION 11.0.1


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]=5.15, 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)

1225.7159 5.45e-01 8.11e+08 4.58e-06 8.18e-06 2.67e-05 1.33e-03 2s 3p 3P2 2p 3p 3S1 16 29 406022 487607
* 1268.1340 2.12e+00 8.02e+08 4.65e-07 1.01e-06 1.19e-05 1.57e-03 2s 4f 3F4 2p 4f 3G5 57 128 515627 594483
* 1269.0840 1.60e+00 7.37e+08 2.91e-07 6.77e-07 8.43e-06 1.18e-03 2s 4f 3F3 2p 4f 3G4 56 127 515613 594410
1270.2610 6.95e-01 4.17e+08 5.96e-06 1.26e-05 7.27e-05 1.59e-03 2s 3p 3P2 2p 3p 3D3 16 28 406022 484746
* 1288.2780 2.14e+00 1.72e+09 1.04e-06 1.46e-06 4.16e-06 1.48e-03 2p 3d 1P1 2p 4f 1D2 59 133 518893 596516
1296.5959 1.18e+00 6.68e+08 1.66e-06 2.43e-06 7.73e-06 2.00e-03 2s 3d 1D2 2s 4f 1F3 20 46 429159 506284
1309.5520 5.37e-01 7.04e+08 1.55e-06 2.87e-06 1.05e-05 1.16e-03 2s 3p 1P1 2p 3p 1P1 13 25 404522 480884
* 1363.5120 3.52e+00 1.40e+09 9.56e-07 1.66e-06 8.89e-06 2.09e-03 2s 4f 1F3 2p 4f 1G4 60 129 521284 594624
1483.3270 0.00e+00 1.18e-02 3.17e-02 8.12e-06 2.22e-10 1.97e-12 2s2 1S0 2s 2p 3P2 1 4 0 67416
1486.5031 4.77e-07 4.83e+02 1.09e-01 1.07e-01 5.46e-06 4.83e-08 2s2 1S0 2s 2p 3P1 1 3 0 67272
1718.5380 5.13e-01 2.28e+08 1.42e-02 1.69e-02 2.76e-02 9.50e-03 2s 2p 1P1 2p 2p 1D2 5 9 130693 188882
2080.9490 4.06e+00 6.86e+08 2.06e-06 2.72e-06 9.96e-06 1.01e-03 2s 4f 1F3 2s 5g 1G4 46 72 506284 554339
2647.8140 9.99e+00 8.54e+08 1.28e-06 2.37e-06 1.79e-05 1.21e-03 2s 4f 3F4 2s 5g 3G5 57 73 516572 554339
3479.7129 9.60e-01 1.07e+08 2.73e-04 5.34e-04 2.69e-04 2.37e-04 2s 3s 3S1 2s 3p 3P2 11 16 377284 406022

Created by Giulio Del Zanna on Wed Apr 16 17:43:36 2025