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Experimentally, with an incident monochromous beam of X-ray photons, or electrons, or neutrons, the differential cross-section can be given by,
----------------------- [2672a] where,
j0 -- (= dN0/(dt cm2)) The current-density of the beam.
Ω -- The solid angle.
dNs/dt -- The number of counts per second.
Then, we can have,
----------------------- [2672b]
Figure 2672 indicates the dΩ. Equation 2672b also defines the range of angles through which the electron can be scattered.
Figure 2672. Schematic illustration of scattering of an electron by a single atom.
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