CH+
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 | 3.29e-10 | — |
| Mathis | 2.58e-10 | — |
| 4000K | 5.99e-10 | — |
| 10000K | 3.79e-11 | — |
| 20000K | 3.16e-10 | — |
| Lyman-alpha | 7.87e-12 | — |
| Solar | 8.12e-10 | — |
| TW-Hya | 8.07e-11 | — |
| Cosmic ray UV | 2.16e-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 | 2.63 | 3.54 | 0.34 | 3.00 | [Download] | [Download] |
| Mathis | 2.68 | 3.59 | 0.34 | 3.06 | [Download] | [Download] |
| 4000K | 1.07 | 1.62 | 0.73 | 1.46 | [Download] | [Download] |
| 10000K | 1.48 | 2.38 | 0.38 | 1.89 | [Download] | [Download] |
| 20000K | 2.65 | 3.56 | 0.34 | 3.02 | [Download] | [Download] |
| Lyman-alpha | 2.11 | 2.97 | 0.58 | 2.70 | [Download] | [Download] |
| Solar | 1.07 | 1.62 | 0.72 | 1.46 | [Download] | [Download] |
| TW-Hya | 2.11 | 3.11 | 0.29 | 2.48 | [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.]