jaxrts.free_free.dielectric_function_RPA_Dandrea1986

jaxrts.free_free.dielectric_function_RPA_Dandrea1986(k: Quantity, E: Quantity, T: Quantity, n_e: Quantity)[source]

Calculate the dielectric function in random phase approximation by using the fitts given by [Dandrea et al., 1986], which should give a notable increase in the calculation time over solving the integrals, numerically.

This function does not require a chemical potential, and rather a electron number density n_e. It seems to be included in the fitting functions.

Parameters:

k (Quantity) – Length of the scattering number (given by the scattering angle and the energies of the incident photons (unit: 1 / [length]).
E (Quantity) – The energy shift for which the free electron dynamic structure is calculated.
T (Quantity) – The plasma temperature in Kelvin.
n_e (Quantity) – The electron number_density in 1 / [length]**3.

Returns:

Quantity – The full dielectric function (complex number)