In the original article, the (tripartion of the) shape of the calculated cross sections is discussed in section 4.Calculations, separately from the comparison to the experimental cross sections.
Based on an estimation of the wavelength, the author decides to focus on particular branches of the deflection function, neglecting the others. More details could be given about this. This estimation is rather qualitative in nature and therefore a part of this module.
The experimental figure is copied from the (experimental) results A08-m4bi, and the theoretical figure is copied from the quantitative interpretation A08-m5bii2, so that they can be compared qualitatively.
Equation 0.12 for
is copied from the Theoretical Methods A08-m3c, in order to make this module self-contained. Copying equations and figures to the location where they are used makes reading more efficient. In the original versions, the reader sometimes has to turn quite a few pages in order to locate the required object.
The precise theoretical cross section can only be obtained from the potential parameters and the coupling parameters, which are determined in a Quantitative interpretation module A08-m5b. In this module the general shape of the curve is used qualitatively.
Hrot=0 eV in the theoretical figure means that the rotational coupling has not been taken into account yet.