jaxrts.ion_feature.free_electron_susceptilibily_RPA
- jaxrts.ion_feature.free_electron_susceptilibily_RPA(k: Quantity, kappa: Quantity, lfc: float = 0) Quantity[source]
Return the free electron susceptilibily given by [Gericke et al., 2010] eqn 4
\[\xi_{ee}^\text{RPA} = \frac{\kappa^2 \epsilon_0} {e^2 \varepsilon^\text{RPA}}\]where \(\varepsilon^\text{RPA} = \frac{k^2 + \kappa^2}{k^2}\)
- Parameters:
k (Quantity) – Length of the scattering number (given by the scattering angle and the energies of the incident photons (unit: 1 / [length]).
kappa (Quantity) – Inverse screening length.
lfc (float) – The local field correction.
- Returns:
xi(k) (Quantity) – The free electron susceptilibily.
