CAJ | 학술논문

227 Ac是制备219 Rn放射源的最佳母体。论文介绍了对从铀矿石中提取的227 Ac进行放射性纯度鉴定的方法。通过对219 Rn子体211 Pb的相对测量及219 Rn的干扰核素222 Rn、220 Rn的定量测量来鉴定产品227 Ac的放射性纯度，227 Ac产品中222 Rn、220 Rn的含量少于0．2％，227 Ac的放射性纯度能达到99．8％以上。
227 Ac시제비219 Rn방사원적최가모체。논문개소료대종유광석중제취적227 Ac진행방사성순도감정적방법。통과대219 Rn자체211 Pb적상대측량급219 Rn적간우핵소222 Rn、220 Rn적정량측량래감정산품227 Ac적방사성순도，227 Ac산품중222 Rn、220 Rn적함량소우0．2％，227 Ac적방사성순도능체도99．8％이상。
227 Ac is the most appropriate parent nuclide to produce a solid 219 Rn source.The paper describes methods to determinate the radiochemical purity of 227 Ac ext-rated from uranium ore .The radiochemical purity of 227 Ac is determined by relative measurement of 211 Pb and quantitative measurement of 222 Rn、220 Rn.The re-sults show that the content of 222 Rn、220 Rn in 227 Ac product is lower than 0.2%, and the radiochemical purity of 227 Ac is up to 99 .8%.