darkhistory.physics.coll_ion_sec_elec_spec¶
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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.