HO2

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]
[Download cross section figure as pdf]

Photodissociation and ionisation rates (s-1)

Radiation Photodissociation Photoionisation
ISRF 6.69e-10
Mathis 4.43e-10
4000K 1.79e-08
10000K 2.02e-09
20000K 7.93e-10
Lyman-alpha 7.87e-12
Solar 2.20e-08
TW-Hya 4.83e-10
Cosmic ray UV 1.89e-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 1.69 2.46 0.59 2.20 [Download] [Download]
Mathis 1.70 2.46 0.59 2.20 [Download] [Download]
4000K 1.56 2.29 0.64 2.07 [Download] [Download]
10000K 1.65 2.40 0.63 2.17 [Download] [Download]
20000K 1.68 2.44 0.60 2.19 [Download] [Download]
Lyman-alpha 2.11 2.97 0.58 2.70 [Download] [Download]
Solar 1.61 2.35 0.62 2.12 [Download] [Download]
TW-Hya 1.65 2.40 0.62 2.17 [Download] [Download]

Photoionisation

Radiation γE2 γexp k0fit γfit Line data Dust data
ISRF - - - -
Mathis - - - -
4000K - - - -
10000K - - - -
20000K - - - -
Lyman-alpha - - - -
Solar - - - -
TW-Hya - - - -

[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.]