第58卷第2期2024年2月原子能科学技术AtomicEnergyScienceandTechnologyVol.58,No.2Feb.2024加速器驱动的次临界铀溶液同位素生产堆概念设计李焕星,夏兆东,刘锋*,周琦,朱庆福,宁通,孙旭,柯国土(中国原子能科学研究院反应堆工程技术研究所,北京102413)摘要:加速器驱动的次临界铀溶液系统作为新型同位素生产技术,具有固有安全性高、同位素比活度高及提取工艺简单等优势。本文从次临界系统的基础理论出发,确定了堆芯设计原则,针对加速器中子源和燃料选型进行说明,利用蒙特卡罗程序完成了次临界堆芯的概念设计并给出了一系列设计参数,此外,对堆芯长寿期燃耗特性和99Mo产能进行了计算分析。结果表明,该方案99Mo的年产能可达20kCi(1Ci=3.7×101°Bq)以上,考虑运输过程中衰变损失,保守估计可满足全国1/3的临床需求,对后续掌握°Mo生产技术并实现工程应用具有重要的现实意义。关键词:医用同位素生产,Mo/99Tc";加速器驱动的次临界装置;溶液堆中图分类号:TL416doi:10.7538/yzk.2023.youxian.0254ConceptualDesignofAcceleratorDrivenSubcriticalAqueousHomogeneousReactorforIsotopeProductionLIHuanxing,XIAZhaodong,LIUFeng*,ZHOUQi,ZHUQingfu,NINGTong,SUNXu,KEGuotu(ReactorEngineeringTechnologyResearchInstitute,ChinaInstituteofAtomicEnergy,Beijing102413,China)Abstract:99Tcmisthemostwidelyusedradioisotopeinthefieldofnuclearmedicineatpresent,whichisusedforclinicaldiagnosisofdiseasesandresearchonthestructureandfunctionoforgansgenerally.Theexistingmedicals9TemismainlyobtainedthroughthedecayofMogeneratedbyirradiatinglowenricheduranium(LEU)orhighenricheduranium(HEU)solidtargetsintheexperimentalreactor.Therearedrawbackssuchascomplexprocesses,highcostsandlong-distancetransportationlosses.Inaddition,theglobalnumberofmedicalisotopeproductionreactorsisrelativelysmallandmostofthemwerebuiltinthe1950sand1960s.Theyfaceaseriesofissuessuchasaging,unstableoperationandretirement.Theacceleratordrivensubcriticalaqueoushomoge-neousreactor,whichwasproposedbasedonthestrengthsandweaknessesofproducing文献标志码:A文章编号:1000-6931(2024)02-0393-08收稿日期:2023-04-06;修回日期:2023-07-15基金项目:中国原子能科学研究院院长基金*通信作者:刘锋394medicalisotopest...