SciPy

darkhistory.physics.coll_ion_sec_elec_spec

darkhistory.physics.coll_ion_sec_elec_spec(in_eng, eng, species=None)

Secondary electron spectrum after collisional ionization.

See 0910.4410.

Parameters:
in_eng : float

The incoming electron energy.

eng : ndarray

Abscissa of kinetic energies.

species : {‘HI’, ‘HeI’, ‘HeII’}

Species of interest.

Returns:
ndarray

Secondary electron spectrum. Total number of electrons = 2.

Notes

Includes both the freed and initial electrons. Conservation of energy is not enforced, but number of electrons is.

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