Migration of Point Defects in the Field of a Temperature Gradient


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The influence of the temperature gradient over the thickness of the cladding of a fuel element of a fast-neutron reactor on the migration of point defects formed in the cladding material due to neutron irradiation has been studied. It has been shown that, under the action of the temperature gradient, the flux of vacancies onto the inner surface of the cladding is higher than the flux of interstitial atoms, which leads to the formation of a specific concentration profile in the cladding with a vacancy-depleted zone near the inner surface. The experimental results on the spatial distribution of pores over the cladding thickness have been presented with which the data on the concentration profiles and vacancy fluxes have been compared.

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A. Kozlov

Institute of Reactor Materials JSC

编辑信件的主要联系方式.
Email: Kozlov_av@irmatom.ru
俄罗斯联邦, Zarechnyi, Sverdlovsk oblast, 624250

I. Portnykh

Institute of Reactor Materials JSC

Email: Kozlov_av@irmatom.ru
俄罗斯联邦, Zarechnyi, Sverdlovsk oblast, 624250

V. Pastukhov

Institute of Reactor Materials JSC

Email: Kozlov_av@irmatom.ru
俄罗斯联邦, Zarechnyi, Sverdlovsk oblast, 624250

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