A numerical study of the evolution of plasma parameters in an ablative capillary discharge for a two-pulse form of the input energy

A study of spatial and temporal dependences of plasma-relevant parameters has been done in the frame of a general quasi-one-dimensional model for ablative capillary discharges and for a specific time-dependence of the input energy. Particular attention was given to the effect of the so-called 'second boost of input energy' that leads to a substantial increase of some of the main plasma parameters such as exit velocity (26%), mass flux (177%) and energy flux (exit power) (285%). Calculations and experiments are in good agreement. The reliabilities of the model and numerical approach are supported by energy conservation condition fulfilment and the critical value of the exit Mach number.