For Sr II, Plane-Wave Born and Distorted Waves approximations reproduce R-matrix effective collision strengths within an order of magnitude (DW within a factor of 2.5), offering cheap atomic data for kilonova nebular modeling.
Given the acute lack of atomic data for the wide range of heavy elements expected in KN ejecta, the balance be- tween completeness and accuracy becomes crucial
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Benchmarking the Plane-Wave Born and Distorted Waves approximations for electron-impact collision strength computations: the sample case of Sr II
For Sr II, Plane-Wave Born and Distorted Waves approximations reproduce R-matrix effective collision strengths within an order of magnitude (DW within a factor of 2.5), offering cheap atomic data for kilonova nebular modeling.