Calculation And Optimization Of Cascades For Separating Stable Multicomponent Mixtures

Today,stable isotopes are widely used in many fields,such as medical diagnosis,agriculture,environmental protection,fundamental research and public security.Due to the diversity of stable isotopes,which has the characteristics of multi-component isotope,Centrifugation is fully used during many methods for isotopes.However,there are still many problems in the centrifugal separation of stable isotopes to be solved.One of the difficult issues is the caculation and optimization of practical cascades,which balance the efficiency and the practicability.The main task of this article is the optimization of practical cascades for stable isotopes,which lower limit is square cascades and upper limit is matched abundance ratio cascades.The criterion for efficiency for separation of stable isotopes is the economy of cascades,which is based on square-off cascades.The cascade which is optimized has high economical efficiency and meets the practical need of simple construction and universality.By theoretical inference of both the square cascades and matched abundance ratio cascades,the application of cascades for the separation of WF₆,Xe,SiHCl₃is made.Under the condition of the same number of cascades and the same quantity of production,the characteristic of the two cascades is compared.The separation efficiency of square cascades is hopeful to be further improved.To solve the problem that how to define the criterion for efficiency of multi-component cascades,the optimal objections which is comprehensiveness and involved several aspects is proposed by comparing other different optimal objections.Whereafter,a method is developed for optimizing the practical cascades for stable isotopes,which is based on square-off cascades and is optimized for the economy of cascades.The economy of the optimal cascades with simple structure is much better than the square cascades.The achievements here establish an effective in the criterion for optimization of multi-component isotope separation and in practical cascade design for cascades.