85Kr release during the oxidation and self-heating of irradiated uranium in air

摘要: Abstract The behaviour of the fission gas 85 Kr has been studied during oxidation irradiated uranium in air. Over temperature range 220–320 °C there is a direct proportionality between extent isothermal and amount released. Above 300 metal can self heat although well defined ignitions do not occur thermal cycling reaction observed, which with unirradiated initiated at least 200 higher. During release curve follows considerable sensitivity curve. degree heating insufficient for bubble growth to play significant role it concluded that solid product concentration oxide stoichiometry are important parameters initiation continuation reactions.