^188W—^188Re发生器的研制

以酸性氧化铝为吸附剂，制备了一个１１８ＭＢｑ的１８８Ｗ－１８８Ｒｅ发生器，并对发生器性能进行了为期４个月的检测。结果表明，１８８Ｒｅ的淋洗产额在８０％—９０％之间，１８８Ｗ的穿透率约为１．０×１０－４％。由于采用了较大高径比的交换柱，使１８８Ｒｅ的放射性比活度较高，能满足用于放射免疫治疗研究的抗肿瘤单克隆抗体标记的要求。     

Dynamic Study on Damped Reactions of ^244Pu＋^244Pu,^238U and^238U and ^197Au＋^197Au

In most attempts to produce superheavy elements（SHE）, the complete fusion reactions have successfully been tried. Since the 70＇s the elements from Z=107 to 116 were synthesized in the ＂cold fusion＂ reactions with lead and bismuth targets and ＂hot fusion＂ reactions with actinite targets. However,     

Measurement of ^90Sr and ^90Y Under Unbalance by Bremsstrahlung

DC-DC开关功率变换器在通信、军事设备、计算机、仪器仪表及工业自动化设备等电子工业和军工系统中有着极其广泛的应用。近年来，DC—DC开关功率变换器动力学性质的研究发现，该变换器中有着十分丰富的非线性动力学行为，例如DC—DC开关功率变换器经过一系列分岔如倍周期分岔、边界碰撞分岔等可达到混沌。由于DC-DC开关功率变换器运行中，电路拓扑结构随时间改变，使其成为一个典型的分段光滑非线性动力系统。     

Dynamic Study of Fusion Reactions of ^40,48Ca＋^90,96Zr

Based on the Improved Quantum Molecular Dynamics Model the fusion reactions of ^40,48Ca＋^90,96Zr are studied by making a more rigorous treatment of the initial condition. The study shows us that： （1） the calculated fusion cross sections for all four reactions of ^40,48Ca＋^90,96Zr are in good agreement with experiment data;     

P507萃淋树脂分离^90Sr—^90Y

一、引言萃淋树脂在分析分离及湿法冶金中取得了良好的应用效果。用它来分离性质相近的元素有不少报道,有人以D_2EHPA为固定相,用萃取色层法分离~(90)Sr-~(90)Y。但是,用P_(207)萃淋树脂来分离~(90)Sr-~(90)Y,尚鲜见报道。本文对P_(507)萃淋树脂的基本性能进行了测试。在探讨~(90)Sr-~(90)Y在该萃淋树脂上吸附淋     

Activation cross section measurement for ^165Ho（n,γ）^166m Ho and ^151Eu（n,γ）^152g Eu

The cross sections for ^151Eu(n,γ）152gEu reaction in the neutron energy range of 22-1100keV and the cross sections for ^165Ho(n,γ)166m Ho reaction at the neutron energies of 203.676 and 974keV are measured by activation method.The data of the neutron activation cross section at given energy ranges for ^165Ho and ^151Eu are presented for the first time.     

三种铝样品中^232Th和^238U的含量

本文介绍了用HPGe反康普顿γ谱仪分析三种铝样品(L4R,Lr11CR,Cz)中天然放射性核素~(232)Th和~(233)U含量的结果,其中~(233)U的含量为0.8—0.52Bq/kg,~(232)Th的含量为2.3—6.8Bq/kg。     

Systematics Study of the Independent Yields for Neutron-Induced Fission of ^235,238U and ^239pu

The fission yields play important rolls in the nuclear engineering, such as the calculations for the decay energy and the poisonous material in reactor engineering. The independent yield is the main part of the fission yields. The systematics of the independent yields was studied for fission of ^235＇238U and ^239pu induced by thermal, fission spectrum and fast（about 14 MeV） neutron with Zp model, and the data were evaluated. The results were compared with the data from other libraries such as ENDF/B6, JEF-3.0 and JENDL3.3.     

裂变放射性核素^90Sr、^137Cs分离的研究进展

对近年来裂片核素^90Sr、^137Cs的分离技术如沉淀法、萃取法、无机离子交换法等研究的进展进行评述,同时展望了可能潜在的高放废物（液）处理技术路线。对汽液矿化处理^90Sr、^137Cs废液做了简单介绍。新型高效萃取剂冠醚（DtBuCH18C6）和杯冠芳烃（BOBCalixC6）对^90Sr和^137Cs离子有比较好的选择性;绿色萃取技术如离子液体萃取技术、超临界流体萃取技术也在^90Sr、^137Cs萃取分离中得到应用。晶态钛硅酸盐（CST）和金属硫化物（KMS-1）在碱性条件下对^137Cs和^90Sr有比较高的选择性。汽液矿化处理能将含有^90Sr、^137Cs的低放废液转化成稳定的硅铝酸矿物。虽然理论上能有效地将^90Sr和^137Cs从高放废液中分离出来,但是高放乏燃料的最终处置技术还有待进一步探索。     

Unusual Threshold Anomaly in ^6Li＋^208Pb System

The angular distributions of elastic scattering for ^6Li＋^208Pb system have been measured at several energies around the Coulomb barrier. The parameters of optical potential are extracted by means of a phenomenological optical model analysis. It is found that the real and imaginal potentials show a pronounced energy dependence.     

Measurements of fast—neutron capture cross sections for ^159Tb and ^169Tm

The neutron capture cross sections for ^159Tb and ^169Tm relative to the ^197Au (n,γ)^198Au reaction are measured at neutron energies of 0.57,1.10 and 1.60 MeV by using the activation method.The activities of the products are measured with a high resolution HPGe detector gamma-ray spectrometer.The errors of the present work are 5-6% for Tb,6-7% for Tm.The recommended data in energy region of 0.4-3.0MeV are given as compared with other data published previously.     

800MeV质子入射^160、^27Al、^56Fe、^112Cd、^184W与^208Pb靶散裂反应机制

采用改进的量子分子动力学模型（ImQMD05）加统计衰变模型（SDM）来研究800MeV质子入射的散裂反应。采用不同的平均场，研究有效相互作用对散裂反应机制的影响，并给出工程应用上关心的出射中子的双微分截面。     

CesiP的交换性能及其在^201Pb—^201Tl母子体系中的应用

本文通过11种无机离子交换剂对Pb~(2+),Tl~(3+)及T1~+交换性能的研究,选择CeSiP进行~(201)Pb-~(201)Tl分离。研究了其交换性能、穿透容量及其交换柱的淋洗性能.制备了~(201)Pb-~(201)Tl母子体系.该母子体系可得到产额为83.5％,核纯>99.0％的~(01)T1.     

用^236Pu作产额示踪剂分析土壤中的^238Pu

以^236Pu作产额示踪剂测定了600多个土壤样品中^238Pu分析的全程化学产额,其产额值呈正态分布,最可几产额值为0.48,标准偏差为0.20。采用示额法进行全程化学产额校正比用预定化学产额值0.70进行化学产额校正所产生的误差小得多。