CHIANTI

An Atomic Database for Spectroscopic Diagnostics of Astrophysical Plasmas.


Fe 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]=4.75, 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)

27740.0215 0.00e+00 4.75e-02 9.68e-03 9.99e-04 9.47e-04 9.47e-04 3d5 4P3/2 3d5 4D3/2 7 12 35333.3 38938.2
27763.8965 0.00e+00 2.56e-03 1.07e-03 8.07e-05 7.66e-05 7.66e-05 3d5 4P3/2 3d5 4D5/2 7 11 35333.3 38935.1
28063.0859 0.00e+00 4.44e-02 7.99e-03 4.61e-04 4.38e-04 4.38e-04 3d5 4P3/2 3d5 4D1/2 7 10 35333.3 38896.7
28363.9668 0.00e+00 4.65e-02 3.68e-02 1.92e-03 1.82e-03 1.82e-03 3d5 4P5/2 3d5 4D7/2 6 9 35253.8 38779.4
28652.4746 0.00e+00 7.25e-02 1.28e-02 7.37e-04 7.00e-04 7.00e-04 3d5 4P1/2 3d5 4D1/2 8 10 35406.6 38896.7
31706.7754 0.00e+00 1.74e-02 8.96e-04 4.49e-04 4.28e-04 4.28e-04 3d5 (3) 2D5/2 3d5 4F7/2 15 20 49541.5 52695.4
38092.3359 0.00e+00 7.85e-02 9.61e-04 1.28e-03 1.22e-03 1.22e-03 3d5 (3) 2D5/2 3d5 (2) 2F5/2 15 18 49541.5 52166.7

Created by Giulio Del Zanna on Wed Apr 16 17:43:03 2025