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Results (m4)

From a physics perspective, different types of results can be distinguished in A05 and A08: experimental and theoretical results. These results are firmly linked to the experimental and theoretical methods used to generate them. Some of these constituent modules in their turn contain constituent modules that are likely to be consulted separately.

The modular model allows for the distinction of separate modules that focus on the results for differential cross sections in collisions between particular types of alkali atoms and halogen molecules, at particular energies. That distinction turns out to be too fine-grained. We assume that usually readers would not wish to consult separately an elementary module focusing on the collision of atoms with a particular type of halogen molecule at a particular energy. The result of the experiment is the shape that all curves share, rather than the value for the cross section for a particular angle as given by the individual curves. In principle, only the difference between halogen molecules and other electronegative molecules, such as ${\rm O_2}$ and CO, would justify the distinction of different modules. Accordingly, we have presented the experimental cross sections in collisions between Na and I at a wide range of energies in the one elementary A08-m4bi1, and the experimental cross sections for Li and Br2 and for K and I2 in the same module A05-m4bi2.

For a practical reason, however, the cross sections for collisions between K and Br2 are presented in a separate elementary module A05-m4bi1. In the original version, the results are separated in a similar manner: the results for ${\rm K + Br_2}$ are presented in Figure 4 and those for ${\rm K + I_2}$ and ${\rm Li + Br_2}$ in Figure 5. The reason is that the results ${\rm K + Br_2}$ are explicitly referred to in the section Discussion in the original version and in the module Interpretation A05-m5 in the modular version. Isolating these specific results in a separate module allows readers to consult the Interpretation in conjunction with the specific module A08-m4bi1, without its `sibling' A05-m4bi2. Nevertheless, the specific types of results cohere strongly and therefore they are grouped in a single covering cluster module A04-m4bi on alkali atom-halogen molecule collisions in general. 

Also, different constituent modules are distinguished within the Results module, in particular in A08-m4, to represent results at different stages. First, the experimental differential cross sections are obtained and presented in A08-mbi1. In these curves, the rainbow structure is identified and presented in A08-m4bi2. The  compound module A08-m4bi is an aggregate of these two components. In the compound module A08-m4bii with the theoretical results, first the potential parameters are determined (A08-m4bii1). Using the potential as input, the theoretical differential cross sections are calculated (A08-m4bii2), in which then the rainbow structure is made explicit (A08-m4bii3).



 
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Next: Raw data m4a Up: A discussion of the Previous: Theoretical methods m3c