macro.thermal_width
macro.thermal_width(temperature, mass, wavelength)The thermal_width of velocity_classes for a vapor.
The Doppler weights in clerq are exp(-(delta / w)^2) with w = u / lambda and u = sqrt(2 k_B T / m) the most probable speed.
Parameters
| Name | Type | Description | Default |
|---|---|---|---|
| temperature | float | Temperature, in kelvin. | required |
| mass | float | Atomic mass, in amu. | required |
| wavelength | float | Transition wavelength, in nm. | required |
Returns
| Name | Type | Description |
|---|---|---|
| float | w in MHz. |