Physical nature of longevity of light actinides in dynamic failure phenomenon |
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Authors: | A Ya Uchaev V T Punin N I Selchenkova E V Kosheleva V V Kosachev |
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Institution: | 1.Russian Federal Nuclear Center—VNIIEF,Sarov, Nizhny Novgorod oblast,Russia;2.National Research Nuclear University MEPhI (Moscow Engineering Physics Institute),Moscow,Russia |
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Abstract: | It is shown in this work that the physical nature of the longevity of light actinides under extreme conditions in a range of nonequilibrium states of t ~ 10–6–10–10 s is determined by the time needed for the formation of a critical concentration of a cascade of failure centers, which changes connectivity of the body. These centers form a percolation cluster. The longevity is composed of waiting time t w for the appearance of failure centers and clusterization time t c of cascade of failure centers, when connectivity in the system of failure centers and the percolation cluster arise. A unique mechanism of the dynamic failure process, a unique order parameter, and an equal dimensionality of the space in which the process occurs determine the physical nature of the longevity of metals, including fissionable materials. |
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