论文标题
UCX靶标的密度和释放性能对Alto裂变产物产量的影响
Influence of density and release properties of UCx targets on the fission product yields at ALTO
论文作者
论文摘要
为了研究UCX靶标的结构特性对其释放性能的影响，合成，表征，辐照和加热，使用不同的前体（碳和铀）的几种类型的靶标，从而确定八个元素的释放部分。在本文中，这些目标的生产速率是在ALTO的使用条件下估计的，即被电子束（10μA，50 MEV）轰击的目标。我们已经模拟了使用Fluka代码产生的裂变编号。然后，我们使用对先前研究的元素推导的平均扩散系数确定了同位素半衰期的释放效率。最后，我们比较从各个目标获得的生产率，并得出结论，必须将目标适应所研究的元素。在每种情况下，至关重要的是，目标密度与释放效率之间的最佳妥协。
To study the influence of the structural properties of UCx targets on their release properties, several types of targets using different precursors (carbon and uranium) were synthesized, characterized, irradiated and heated leading to the determination of the released fractions of eight elements. In this article, the production rates of these targets are estimated under the use conditions at ALTO, i.e. with targets bombarded by an electron beam (10 μA, 50 MeV). We have simulated the fission number produced using the FLUKA code. Then, we have determined the release efficiency as a function of the half-life of the isotopes using average diffusion coefficients deduced for the elements studied previously. Finally, we compare the production rates obtained from the various targets and conclude that the target must be adapted to the element studied. It is crucial to find in each case the best compromise between the target density and the release efficiency.
