Ni

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 — 9.76e-11
Mathis — 6.30e-11
4000K — 9.50e-12
10000K — 7.52e-11
20000K — 9.39e-11
Lyman-alpha — 4.90e-11
Solar — 9.54e-12
TW-Hya — 7.71e-11
Cosmic ray UV — 1.40e-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 1.67 2.43 0.59 2.17 [Download] [Download]
Mathis 1.67 2.44 0.59 2.17 [Download] [Download]
4000K 1.58 2.30 0.63 2.07 [Download] [Download]
10000K 1.62 2.36 0.62 2.12 [Download] [Download]
20000K 1.66 2.42 0.60 2.16 [Download] [Download]
Lyman-alpha 2.11 2.97 0.58 2.70 [Download] [Download]
Solar 1.62 2.38 0.60 2.12 [Download] [Download]
TW-Hya 1.73 2.51 0.57 2.23 [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.]