高无反冲分数的碘穆斯堡尔源的研制  

Preparation of an iodine Mossbauer source with high recoilless fraction

作　　者：吴卫芳[1] 李士[1] 李印华[1] 

机构地区：[1]中国科学院高能物理研究所

出　　处：《核技术》1990年第9期513-518,共6页Nuclear Techniques

摘　　要：报道了用作碘穆斯堡尔源的新材料硫酸镁(Mg_3TeO_6)研制。碲酸镁具有高熔点(1420℃)和高的德拜温度(320K),碲以Te^(+6)存在于化合物中,形成高配位完整立方结构,能代替ZnTe、SnTe作碘的穆斯堡尔源。对所研制的碲酸镁进行了X-衍射、差热及中子活化分析测试,证明从结构到纯度都达到作为碘穆斯堡尔源的要求。The preparation of Mg3TeO6 as an iodine Mossbauer source is described. It has a high melting point(1420℃) and a high Debye temperature(320K). Te in the compcuud is in the from of Te+6 ion, with a structure having high coordination number and perfect cubic symmetry. As a substitute for ZnTe and SnTe sources, this source might be used for the Mossbauer measurements at room temperature. The preparation methods of Mg3TeO6 have the advantage of simplicity and do not need any after-treatment. The quality of Mg3TeO6 has been determined by X-diffraction, differential thermal and neutron activation analysis. The results show that Mg3TeO6 is an ideal material as a Mossbauer iodine source.

关 键 词：穆斯堡尔源 无反冲分数 碲酸镁 碘 

分 类 号：O613.44[理学—无机化学]