Derivation of the ''source-sink'' technique equations from the kinetic equation

The ''source-sink'' technique equations are derived from the the Boltzmann equation with a continuous energy dependence. The media is assumed to represent a uniform moderator where there are blocks (channels) with different fissioning, absorbing and moderating properties. The blocks are infinite cylinders with parallel axes. The set of equations is obtained in a two-group approximation with the account of neutron moderation,, resonance absorption and multiplication in a block