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Absorption
Description
Electrons can be absorbed by the material so they are no longer part of the LBM model. This process in general is quite similar to a type of relaxation so it can also be modeled by the distribution of electrons in equilibrium.
ID:(9161, 0)
Elastic scattering
Description
The electrons can suffer elastic collisions with which they can alter the direction of propagation. This contributes to the re-orientation associated with the relaxation process so it can also be modeled by the distribution of electrons in equilibrium.
ID:(9159, 0)
Electron-electron collision
Description
The collision between electrons significantly modifies the distribution between them. To the extent that the process is not anisotropic, ie in the initial situation that an electron is created, it must be modeled by the collision term and not by a relaxation process.
ID:(9162, 0)
Excitation and de-excitation
Description
In the process of excitation and de-excitation the number of electrons can vary, in which case the process must be modeled by collisions.
ID:(9160, 0)