Using the technique of lattice statics, the interaction energies are calculated for octahedral interstitials interacting with one another and with substitutional impurities in the f.c.c. Cu lattice. The existence of a sufficiently strong attractive energy between a pair of octahedral interstitials has been established. It is shown that the character of interaction between an interstitial and substitutional impurity trap depends to a considerable extent on the sign of the dilatation volume of the impurity. On the basis of the results obtained, the structure of lower-order interstitial clusters is examined, formed from substitutional impurity atoms under the influence of irradiation. MeToXoM pelIleTOqHOfi CTaTHHH paCCqHTaHb1 3HeprMH

A new scheme is suggested for describing the system of reacting particles using the Fock space of distribution functions. This method can be applied to calculate any function of the number of particles in a system, in particular, the moments of any order. Diffusion-limited reactions and simultaneous generation and annihilation of particles as the result of reaction are considered.

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