Abstract
The dynamics of a high density D-T fiber plasma driven by a multi cascade system (N multiple shells of finite thicknesses) has been investigated with a view to suppress Rayleigh–Taylor (R–T) instability. Our numerical results show that the plasma parameters of the D-T fiber sensitively depends upon the shell mass ratios and thicknesses. Large values of puff-thickness and mass-ratios provide stabilization against the R–T instability in the final stage of compression but adversely affect fusion conditions. Our analysis, however, suggests that optimum values of the puff-thicknesses and mass ratios are needed to achieve fusion parameters in a multi cascade liner staged Z-pinch devices. The relevance of our present investigation to ultra high magnetic fluxes, X-ray lasers as well as controlled thermonuclear fusion is also pointed out.