CHIANTI

An Atomic Database for Spectroscopic Diagnostics of Astrophysical Plasmas.


Ca XX - 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]=7.60, where the ion fraction peaks in ionization equilibrium. Only lines brighter than 0.001 the strongest line (at all densities) are retained.


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)

2.3608 1.86e-02 5.56e+12 2.23e-02 2.23e-02 2.23e-02 2.45e-02 1s 2S1/2 5p 2P3/2 1 19 0 42359020
2.3610 9.28e-03 5.56e+12 1.12e-02 1.12e-02 1.12e-02 1.22e-02 1s 2S1/2 5p 2P1/2 1 18 0 42355223
2.4172 3.87e-02 1.10e+13 4.97e-02 4.97e-02 4.97e-02 5.68e-02 1s 2S1/2 4p 2P3/2 1 12 0 41369449
2.4177 1.93e-02 1.10e+13 2.48e-02 2.48e-02 2.48e-02 2.82e-02 1s 2S1/2 4p 2P1/2 1 11 0 41362031
2.5490 1.05e-01 2.71e+13 1.50e-01 1.50e-01 1.50e-01 2.03e-01 1s 2S1/2 3p 2P3/2 1 7 0 39231607
2.5501 5.27e-02 2.70e+13 7.52e-02 7.52e-02 7.52e-02 1.02e-01 1s 2S1/2 3p 2P1/2 1 6 0 39214015
3.0185 5.55e-01 1.02e+14 1.00e+00 1.00e+00 1.00e+00 1.00e+00 1s 2S1/2 2p 2P3/2 1 4 0 33129258
3.0237 0.00e+00 2.62e+07 1.17e-02 1.17e-02 1.17e-02 5.42e-04 1s 2S1/2 2s 2S1/2 1 2 0 33071743
3.0239 2.77e-01 1.01e+14 5.00e-01 5.00e-01 5.00e-01 5.00e-01 1s 2S1/2 2p 2P1/2 1 3 0 33069905
12.0489 2.44e-01 2.80e+12 6.01e-04 6.01e-04 6.01e-04 1.20e-03 2p 2P1/2 4d 2D3/2 3 13 33069905 41369436
12.0515 1.37e-01 1.57e+12 1.42e-03 1.42e-03 1.42e-03 1.63e-03 2s 2S1/2 4p 2P3/2 2 12 33071743 41369449
12.1321 4.38e-01 3.31e+12 1.07e-03 1.07e-03 1.07e-03 2.15e-03 2p 2P3/2 4d 2D5/2 4 14 33129258 41371887
12.1462 1.22e-02 2.75e+11 1.17e-03 1.17e-03 1.17e-03 1.54e-03 2p 2P3/2 4s 2S1/2 4 10 33129258 41362270
16.2294 1.39e+00 8.81e+12 1.41e-03 1.41e-03 1.41e-03 5.80e-03 2p 2P1/2 3d 2D3/2 3 8 33069905 39231576
16.2341 5.80e-01 3.67e+12 3.20e-03 3.20e-03 3.20e-03 4.32e-03 2s 2S1/2 3p 2P3/2 2 7 33071743 39231607
16.2743 2.72e-02 3.42e+11 3.79e-03 3.79e-03 3.79e-03 5.23e-03 2p 2P1/2 3s 2S1/2 3 5 33069905 39214580
16.2806 2.90e-01 3.65e+12 1.59e-03 1.59e-03 1.59e-03 2.15e-03 2s 2S1/2 3p 2P1/2 2 6 33071743 39214015
16.3716 2.51e+00 1.04e+13 2.51e-03 2.51e-03 2.51e-03 1.03e-02 2p 2P3/2 3d 2D5/2 4 9 33129258 39237382
16.3872 2.78e-01 1.73e+12 2.75e-04 2.75e-04 2.75e-04 1.13e-03 2p 2P3/2 3d 2D3/2 4 8 33129258 39231576
16.4330 5.44e-02 6.72e+11 7.37e-03 7.37e-03 7.37e-03 1.02e-02 2p 2P3/2 3s 2S1/2 4 5 33129258 39214580

Created by Giulio Del Zanna on Wed Apr 16 17:42:25 2025