FT-TIMS用于核保障安全监督擦拭样品中含铀微粒的分析技术.PDFVIP

CNIC-01932 CAEP-0210 FT-TIMS 用于核保障安全监督擦拭样品中 含铀微粒的分析技术① 杨天丽刘雪梅刘钊汤磊龙开明 (中国工程物理研究院核物理与化学研究所，绵阳，621900) 摘要 在核安全保障框架下，通过擦拭取样进行粒子分析是一种可以 用来探测未申报铀浓缩设备和铀浓缩活动的先进手段o 研究中初步 建立了裂变径迹技术和热表面电离质谱(FT-TIMS) 联用法分析擦 拭样品中含铀微粒的铀同位素比值技术，验证了 FT 用于筛选含铀 微粒的可靠性和筛选过程的实验本底，考察了样品的使用效率，为技 术的完善和成功运用提供了技术支撑o 关键词:核保障粒子分析 ① 由中国工程物理研究院科学技术面上基金支持。基金号为。 47 The Particle Analysis ßased on FT-TI岛1S Techinque for Swipe Sample Under the Frame of Nuclear Safeguard① (1η Chinese) Y ANG Tianli LIU Xuemei LIU Zhao T ANG Lei LONG Kaiming (Institute of Nuclear Physics and Chemistry , CAEP , Mianyang , 621900) ABSTRACT Under the frame of nuclear safegu时， the particles analysis for swipe sample is an advance mean to detect the undeclared uranium enriched facilities and undeclared uranium enriched activity. The technique of particle analysis based on fission tracke-thermal ionzition mass spectrometry (FT-TIMS) for swipe sample have been builded. The reliability and the expermental back- ground for selecting partiles consisting of uranium from swipe sample by FT method have been verified. In addition , the utilization coefficienct of particles on the surface of swipe sample have also been tested. These works have provid- ed the techique surpport for application in the area of nuclear verification. Key words: Nuclear safeguard , Particle analysis ( Supported by science fund of China Academy of Engineering Physics. 48 号| 国际原子能机构(IAEA) 是国际不扩散体制的重要