Nishikawa S
Radioisotopes. 1980 Mar;29(3):130-5. doi: 10.3769/radioisotopes.29.3_130.
The sublimatographic separation of volatile beta-diketonate complexes of fission products produced directly by the recoil atoms of fission products under exposure of a mixture of M (beta-diketone)n and U3O8 on neutron, was carried out. When Fe(dpm)3 and Fe(pta)3 were used as the catcher chelates, both samples, the sublimated radioactive chelates located at the one zone, and the positions agreed with the deposited position of inactive each catcher chelate. The unclides presented in the zone were almost 97Zr-97Nb, 105Ru and 99Mo-99mTc. When Y(dpm)3 was used as the catcher chelates, the sublimated radioactive chelates located at the one zone, and the zone agreed with the deposited position of inactive catcher chelates, the presented nuclides in the zone were mainly 97Zr-97Nb, 95Zr-95Nb, 105Ru, 103Ru, 143Ce, 141Ce, 93Y, 92Y and 147Nd. In the case of Y(pta)3, the sublimated radioactive chelates located at the two zones. The zone at higher temperature side agreed with the deposited position of inactive catcher chelates, and the nuclides presented in this zone were the same as in the case of Y(dpm)3. On the other hand, it was observed that mainly carrier free states of 97Zr-97Nb were deposited at the zone of lower temperature side. When Ni(acac)2 was used as the catcher chelates, the sublimated radioactive chelates located at the same pattern as Y(pta)3, but the amount of deposited zones of activity was quite low. As a U3O8 target was diluted with Fe(dpm)3 catcher chelates, the yield of deposited 97Zr and 95Zr nuclides was enhanced, to about 50%.
在中子照射下，将M（β-二酮）n和U3O8的混合物暴露于裂变产物的反冲原子直接产生的裂变产物挥发性β-二酮配合物的升华色谱分离得以进行。当使用Fe（dpm）3和Fe（pta）3作为捕集螯合物时，两个样品中，升华的放射性螯合物位于一个区域，且位置与每种非活性捕集螯合物的沉积位置一致。该区域中存在的核素几乎是97Zr-97Nb、105Ru和99Mo-99mTc。当使用Y（dpm）3作为捕集螯合物时，升华的放射性螯合物位于一个区域，且该区域与非活性捕集螯合物的沉积位置一致，该区域中存在的核素主要是97Zr-97Nb、95Zr-95Nb、105Ru、103Ru、143Ce、141Ce、93Y、92Y和147Nd。在Y（pta）3的情况下，升华的放射性螯合物位于两个区域。较高温度侧的区域与非活性捕集螯合物的沉积位置一致，该区域中存在的核素与Y（dpm）3的情况相同。另一方面，观察到主要是97Zr-97Nb的无载体状态沉积在较低温度侧的区域。当使用Ni（acac）2作为捕集螯合物时，升华的放射性螯合物呈现出与Y（pta）3相同的模式，但活性沉积区域的量相当低。随着U3O8靶用Fe（dpm）3捕集螯合物稀释，沉积的97Zr和95Zr核素的产率提高到约50%。
