Influence of parameters of a Q-cascade with a local flow "extension" on mass-transfer of components along the cascade length

The presented results complement the theory of separation cascades having a local increase of working substance flow at its internal stages (cascades with the flow 'extension') used to obtain isotopic products with relatively high concentrations of intermediate components. Based on the Q-cascade model theoretical dependences of the maximum possible concentration of the target component in the end product flow of the cascade, the maximum achievable concentration of the target component inside the cascade and the value of the cascade total relative flow versus the length of the cascade section between the end and intermediate product flows - ε₀S_E were obtained. Comparison of these dependences allows to approximately determine the optimal value ε₀S_E for the given value of the target component concentration in one of the cascade product flows. (paper)