The results showed that the clean uranium surface can be oxidated at high vacuum atmosphere.and when exposed dose of oxy-gen was 40L,the surface was covered with UO2.

• 结果表明,在高真空室中,清洁铀表面很容易吸附氧化,发生氧化反应,当O2暴露剂量为40L时,清洁铀表面就会形成一层UO2;