Probability of displacement damage in a component exposed to nuclear radiation stress from the viewpoint of reliability
Abstract A component exposed to a nuclear radiation environment consisting of a major portion of its flux contributing towards the displacement damage in a components material along with recovery phenomenon has been considered at microscopical level in this paper. An atom, after receiving an energy in excess of a specified minimum, produces a Frenkel pair which, if stable, constitutes a displacement damage. Some of these interstitials combine with the vacancies due to channeling, annealing and replacement effects and result in the recovery of the damage. The damage and recovery rates have been formulated. Utilizing these rates, the probability of displacement damage has been estimated by formulating a model with the help of differential equations.