The coincidences & backscattering page

Two phenomena that may cause a simulated and a measured spectrum to differ are coincidences and backscattering. The former is caused by the coinciding of the alpha particle and the particles emitted by the emitters daughter nucleus. The latter is caused by the emitted particles rebounding from the backingplate due to elastic scattering. The coincidence data available can be viewed using the coincidence info browser.

For including coincidence and backscattering effects in simulations
see Coincidences & Backscattering

For browsing coincidence data
see Coincidence info browser