CHIANTI

An Atomic Database for Spectroscopic Diagnostics of Astrophysical Plasmas.


He II - VERSION 4.2


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]=4.70, 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)

237.3310 9.28e-03 5.50e+08 2.42e-03 2.31e-03 2.05e-03 2.47e-03 1s 2S1/2 5p 2P1/2 1 18 0 421352.69
237.3310 1.86e-02 5.51e+08 4.85e-03 4.63e-03 4.10e-03 4.94e-03 1s 2S1/2 5p 2P3/2 1 19 0 421353.06
243.0270 1.93e-02 1.09e+09 4.24e-03 4.04e-03 3.58e-03 6.21e-03 1s 2S1/2 4p 2P1/2 1 11 0 411477.12
243.0270 3.87e-02 1.09e+09 8.48e-03 8.10e-03 7.18e-03 1.25e-02 1s 2S1/2 4p 2P3/2 1 12 0 411477.88
256.3170 1.05e-01 2.68e+09 3.77e-02 6.89e-02 1.45e-01 5.50e-02 1s 2S1/2 3p 2P3/2 1 7 0 390142.56
256.3180 5.27e-02 2.68e+09 1.88e-02 3.44e-02 7.24e-02 2.75e-02 1s 2S1/2 3p 2P1/2 1 6 0 390140.84
303.7810 5.55e-01 1.00e+10 1.00e+00 1.00e+00 1.00e+00 1.00e+00 1s 2S1/2 2p 2P3/2 1 4 0 329185.16
303.7860 2.77e-01 1.00e+10 4.99e-01 4.99e-01 4.99e-01 5.00e-01 1s 2S1/2 2p 2P1/2 1 3 0 329179.31
1215.1730 4.38e-01 3.30e+08 9.10e-04 8.69e-04 7.70e-04 1.14e-03 2p 2P3/2 4d 2D5/2 4 14 329185.16 411478.09
1640.3361 1.39e+00 8.63e+08 1.65e-03 4.61e-03 1.15e-02 2.77e-03 2p 2P1/2 3d 2D3/2 3 8 329179.31 390142.56
1640.3480 5.80e-01 3.60e+08 7.91e-04 1.45e-03 3.04e-03 1.15e-03 2s 2S1/2 3p 2P3/2 2 7 329179.78 390142.56
1640.3781 2.72e-02 3.37e+07 1.54e-03 2.65e-03 3.85e-03 5.42e-05 2p 2P1/2 3s 2S1/2 3 5 329179.31 390140.97
1640.3940 2.90e-01 3.59e+08 3.95e-04 7.22e-04 1.52e-03 5.76e-04 2s 2S1/2 3p 2P1/2 2 6 329179.78 390140.84
1640.4771 2.51e+00 1.04e+09 2.96e-03 8.29e-03 2.07e-02 4.98e-03 2p 2P3/2 3d 2D5/2 4 9 329185.16 390143.16
1640.4930 2.78e-01 1.72e+08 3.30e-04 9.22e-04 2.30e-03 5.54e-04 2p 2P3/2 3d 2D3/2 4 8 329185.16 390142.56
1640.5360 5.44e-02 6.74e+07 3.09e-03 5.29e-03 7.69e-03 1.08e-04 2p 2P3/2 3s 2S1/2 4 5 329185.16 390140.97

Created by Giulio Del Zanna on Fri Aug 5 13:55:32 2005