![]() ![]() Therefore the above equations should be applied for rather small $F \Delta t$. This means the change in wavelength (and energy) of the scattered electron is smaller, may be even undetectable. In this respect physical equations have only to be used in their application limits and do not have the "absolute" character as mathematical assertions. determines whether the photoelectric or Compton eect takes place Answer 6: (a) In the Compton eect, if the electron is bound to an atom, the atom as a whole will recoil, carrying away most of the energy in the collision. Compton observed that the difference between 1 and 0. If $\Delta t$ is considered to be large, note that during all the time F has to be maintained on the (more or less) same value, which rarely occurs in real physical situations. Compton is the scattering of photons by a charged particle (electron). then, set the properties of incident photons, including incident direction (in the following text, theta and phi refer to and in Fig. the probability balance has to be rewritten. In case of very large flux, multi-photon reactions also have to be considered, i.e. On the other hand you could argue that making F or $\Delta t$ large enough that the probability becomes larger than 1. Integrating the differential cross section (times $F\Delta t$) from 0 to $\pi$ you might observe that the result much smaller than 1, this means that in most of the cases there no scattering reaction at all. The well-known cross section formula for Compton scattering is ![]()
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