CS

Cross sections

Cross section figure.


[An explanation of the cross sections in this database]
[All cross sections — variable wavelength scale]
[All cross sections — variable wavelength scale in binary hdf5 format]
[All cross sections — 0.1nm wavelength scale]
[Photodissociation cross section — separate lines and continuum]
[Photoionisation cross section — separate lines and continuum]
[Download cross section figure as pdf]

Photodissociation and ionisation rates (s-1)

Radiation Photodissociation Photoionisation
ISRF 9.49e-10 2.60e-11
Mathis 6.29e-10 1.84e-11
4000K 5.20e-12 7.27e-16
10000K 2.90e-10 2.41e-12
20000K 7.64e-10 2.10e-11
Lyman-alpha 8.42e-09 0.00e+00
Solar 3.09e-10 1.89e-13
TW-Hya 4.95e-09 3.62e-12
Cosmic ray UV 1.93e-13 2.04e-15

[An explanation of the interstellar photo rates.]
[An explanation of the cosmic-ray induced photo rates.]
[An explanation of the radiation fields listed below.]
[Download all rates in a csv file.]

Shielding functions and fitted constants

Photodissociation

Radiation γE2 γexp k0fit γfit Line data Dust data
ISRF 1.95 2.77 0.57 2.49 [Download] [Download]
Mathis 1.95 2.78 0.57 2.50 [Download] [Download]
4000K 1.71 2.48 0.60 2.22 [Download] [Download]
10000K 1.87 2.68 0.57 2.40 [Download] [Download]
20000K 1.93 2.76 0.57 2.48 [Download] [Download]
Lyman-alpha 2.11 2.97 0.58 2.70 [Download] [Download]
Solar 2.10 2.96 0.58 2.68 [Download] [Download]
TW-Hya 2.10 2.96 0.58 2.68 [Download] [Download]

Photoionisation

Radiation γE2 γexp k0fit γfit Line data Dust data
ISRF 2.63 3.59 0.51 3.25 [Download] [Download]
Mathis 2.63 3.59 0.51 3.25 [Download] [Download]
4000K 2.49 3.44 0.55 3.14 [Download] [Download]
10000K 2.58 3.54 0.52 3.21 [Download] [Download]
20000K 2.65 3.61 0.50 3.27 [Download] [Download]
Lyman-alpha - - - -
Solar 2.55 3.50 0.53 3.19 [Download] [Download]
TW-Hya 2.63 3.59 0.51 3.25 [Download] [Download]

[An explanation of the shielding functions and parameterisations.]
[Download all γ factors in a csv file.]
[Download all dust and line shielding functions in a zip file.]