PH+
Cross sections
[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]
[Download cross section figure as pdf]
Photodissociation and ionisation rates (s-1)
| Radiation | Photodissociation | Photoionisation |
|---|---|---|
| ISRF | 1.40e-10 | — |
| Mathis | 1.09e-10 | — |
| 4000K | 9.59e-08 | — |
| 10000K | 4.08e-10 | — |
| 20000K | 1.07e-10 | — |
| Lyman-alpha | 1.67e-10 | — |
| Solar | 8.01e-08 | — |
| TW-Hya | 3.08e-10 | — |
| Cosmic ray UV | 8.98e-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 | 1.16 | 1.93 | 0.49 | 1.57 | [Download] | [Download] |
| Mathis | 1.10 | 1.82 | 0.51 | 1.49 | [Download] | [Download] |
| 4000K | 0.93 | 1.45 | 0.73 | 1.30 | [Download] | [Download] |
| 10000K | 1.01 | 1.58 | 0.70 | 1.41 | [Download] | [Download] |
| 20000K | 1.22 | 2.01 | 0.48 | 1.64 | [Download] | [Download] |
| Lyman-alpha | 2.11 | 2.97 | 0.58 | 2.70 | [Download] | [Download] |
| Solar | 0.93 | 1.45 | 0.74 | 1.29 | [Download] | [Download] |
| TW-Hya | 1.03 | 1.68 | 0.59 | 1.42 | [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.]