驱动堆中长寿命核废料碘的嬗变研究

Studies on Transmutation of Long-Lived Nuclear Waste Iodine in the Accelerator-Driven Reactor

利用理论模拟和实验手段对加速器驱动的快中子堆消除常规反应堆排放的核废料碘进行了研究 .实验中 ,利用加速器加速质子使其能量达到1 0GeV ,并轰击重金属铅靶 ,利用靶中产生的次级中子诱发核废料12 9I的嬗变 ,使其嬗变为稳定同位素130 Xe .对实验嬗变效率进行了理论模拟验证 ,进而拓宽到研究的驱动堆体系中 .堆芯区的核燃料为乏燃料铀和钚 。

The transmutation of nuclear waste 129 I in the subcritical system was studied in the present work using both theoretical and experimental methods. In the experiment, the energetic proton beam (1.0 GeV) form accelerator was used to bombard a thick lead target. And the long lived nuclear waste 129 I was transmuted to 130 Xe by the spallation neutrons generated in the target. The transmutation efficiency of 129 I was compared with theoretical simulation. And the transmutation in an Accelerator Driven Subcritical Fast Reactor (ADSFR) was explored with the experimental results. The spent fuel of PWR (Pressured Water Reactor) is assumed to be used as the fuel in ADSFR. The liquid lead was chosen as target and coolant in the ADS.