CH2+
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 | 1.41e-10 | — |
| Mathis | 1.16e-10 | — |
| 4000K | 3.74e-11 | — |
| 10000K | 8.33e-11 | — |
| 20000K | 1.55e-10 | — |
| Lyman-alpha | 7.87e-12 | — |
| Solar | 3.43e-11 | — |
| TW-Hya | 4.66e-11 | — |
| Cosmic ray UV | 8.88e-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 | 1.86 | 2.73 | 0.40 | 2.27 | [Download] | [Download] |
| Mathis | 1.93 | 2.83 | 0.37 | 2.33 | [Download] | [Download] |
| 4000K | 1.50 | 2.20 | 0.64 | 1.98 | [Download] | [Download] |
| 10000K | 1.53 | 2.26 | 0.61 | 2.01 | [Download] | [Download] |
| 20000K | 1.83 | 2.70 | 0.40 | 2.24 | [Download] | [Download] |
| Lyman-alpha | 2.11 | 2.97 | 0.58 | 2.70 | [Download] | [Download] |
| Solar | 1.52 | 2.23 | 0.62 | 1.99 | [Download] | [Download] |
| TW-Hya | 1.71 | 2.53 | 0.47 | 2.15 | [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.]