jaxrts.ipd.ipd_ion_sphere

jaxrts.ipd.ipd_ion_sphere(Zi: Quantity, ne: Quantity, ni: Quantity, C: float | None = None, Zbar: float | None = None) → Quantity[source]

The correction to the ionization potential for the m-th ionization stage in the ion-sphere model. The ion-sphere model considers the ions to be strongly correlated. (see also [Zimmerman and More, 1980])

Parameters:

  • Zi – The charge state of the atom (note that this is the state before the ionization)

  • ne – Electron density. Units of 1/[length]**3.

  • ni – Ion density. Units of 1/[length]**3.

  • C (float, optional) – A linear scaling factor of it ion Sphere IPD. The default value is 3/2, which is consistent with the limit of ipd_stewart_pyatt() and [Crowley, 2014]. Another typical value would be 9/5, introduced by [Zimmerman and More, 1980]. See also [Lin et al., 2017] and [Ciricosta et al., 2012].

  • Zbar (float, optional) – The average ionization of the plasma. If not given, Zi is assumed to be the average ionization of the plasma.

Returns:

Quantity – The ipd shift in units of electronvolt.