Scattering on a Lennard-Jones potential, cross-section computation.
The description is on: https://compphys.go.ro/quantum-scattering/
Some short info: The referred formulae are from the book "Computational Physics" by J M Thijssen, isbn: 9780521833462, https://doi.org/10.1017/CBO9781139171397, the theory is in chapter 2
The parameters and theory and experimental data can be found in "Molecular beam scattering studies of orbiting resonances and the determination of van der Waals potentials for H–Ne, Ar, Kr, and Xe and for H2–Ar, Kr, and Xe", by J. Peter Toennies, Wolfgang Welz, and Günther Wolf, published in The Journal of Chemical Physics 71, 614 (1979), https://doi.org/10.1063/1.438414