Ca

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]
[Photoionisation cross section — separate lines and continuum]
[Download cross section figure as pdf]

Photodissociation and ionisation rates (s-1)

Radiation Photodissociation Photoionisation
ISRF — 3.47e-10
Mathis — 2.32e-10
4000K — 8.00e-10
10000K — 6.18e-10
20000K — 3.98e-10
Lyman-alpha — 1.44e-10
Solar — 7.90e-10
TW-Hya — 2.91e-10
Cosmic ray UV — 2.71e-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 - - - -
Mathis - - - -
4000K - - - -
10000K - - - -
20000K - - - -
Lyman-alpha - - - -
Solar - - - -
TW-Hya - - - -

Photoionisation

Radiation γE2 γexp k0fit γfit Line data Dust data
ISRF 1.60 2.34 0.61 2.10 [Download] [Download]
Mathis 1.60 2.35 0.61 2.10 [Download] [Download]
4000K 1.55 2.26 0.64 2.04 [Download] [Download]
10000K 1.55 2.27 0.64 2.04 [Download] [Download]
20000K 1.58 2.32 0.62 2.08 [Download] [Download]
Lyman-alpha 2.11 2.97 0.58 2.70 [Download] [Download]
Solar 1.55 2.27 0.64 2.05 [Download] [Download]
TW-Hya 1.64 2.40 0.59 2.14 [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.]