NO

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 3.84e-10 2.60e-10
Mathis 2.72e-10 1.93e-10
4000K 2.10e-10 7.36e-14
10000K 3.14e-10 3.07e-11
20000K 3.87e-10 2.25e-10
Lyman-alpha 7.53e-11 3.27e-10
Solar 2.14e-10 1.93e-11
TW-Hya 2.18e-10 2.58e-10
Cosmic ray UV 2.99e-14 2.37e-14

[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 1.75 2.56 0.50 2.21 [Download] [Download]
Mathis 1.77 2.60 0.48 2.23 [Download] [Download]
4000K 1.52 2.23 0.65 2.01 [Download] [Download]
10000K 1.57 2.30 0.62 2.06 [Download] [Download]
20000K 1.72 2.52 0.51 2.18 [Download] [Download]
Lyman-alpha 2.11 2.97 0.58 2.70 [Download] [Download]
Solar 1.54 2.25 0.63 2.02 [Download] [Download]
TW-Hya 1.70 2.50 0.53 2.18 [Download] [Download]

Photoionisation

Radiation γE2 γexp k0fit γfit Line data Dust data
ISRF 2.46 3.38 0.45 2.99 [Download] [Download]
Mathis 2.49 3.42 0.45 3.02 [Download] [Download]
4000K 1.95 2.77 0.57 2.49 [Download] [Download]
10000K 2.25 3.14 0.48 2.78 [Download] [Download]
20000K 2.50 3.42 0.44 3.01 [Download] [Download]
Lyman-alpha 2.11 2.97 0.58 2.70 [Download] [Download]
Solar 2.26 3.15 0.49 2.79 [Download] [Download]
TW-Hya 2.19 3.06 0.53 2.75 [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.]