Influence of Thin Surface Layer on Fission Gas Release from Uranium Dioxide Single Crystal during Irradiation |
| M. Szuta Institute of Atomic Energy, 05-400 Otwock-Świerk, Poland |
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| In the present paper it is assumed that in the fluence range of 4×1019 - 0.5×1021 fissions/cm3 the main contribution to the fission gas release from an uranium dioxide single crystal is from the bubble traps by knock-out process. An analysis of bubble distribution in the single crystal for different temperatures shows that some experimental peculiarities of the fission gas release during irradiation arise from different conditions of the thin surface layer and the interior of the considered solid. The thin surface layer is assigned by the fission fragment range. |
| DOI: 10.12693/APhysPolA.89.451 PACS numbers: 25.85.Ec, 66.30.Lw |