SiH+
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 | 2.59e-09 | — |
| Mathis | 2.65e-09 | — |
| 4000K | 5.40e-06 | — |
| 10000K | 1.13e-08 | — |
| 20000K | 1.49e-09 | — |
| Lyman-alpha | 3.50e-09 | — |
| Solar | 4.21e-06 | — |
| TW-Hya | 1.14e-08 | — |
| Cosmic ray UV | 1.23e-13 | — |
[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 | 0.94 | 1.55 | 0.61 | 1.30 | [Download] | [Download] |
| Mathis | 0.92 | 1.49 | 0.65 | 1.27 | [Download] | [Download] |
| 4000K | 0.87 | 1.37 | 0.75 | 1.22 | [Download] | [Download] |
| 10000K | 0.88 | 1.38 | 0.74 | 1.23 | [Download] | [Download] |
| 20000K | 0.98 | 1.64 | 0.56 | 1.34 | [Download] | [Download] |
| Lyman-alpha | 2.11 | 2.97 | 0.58 | 2.70 | [Download] | [Download] |
| Solar | 0.88 | 1.37 | 0.75 | 1.23 | [Download] | [Download] |
| TW-Hya | 0.91 | 1.46 | 0.67 | 1.26 | [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.]