Visible radiation characteristics of wire array Z-pinch

The visible radiation has been studied in wire array Z-pinch experiments on Yang accelerator using a silicone photodiode with 1 ns rise time, multi-mode optical fiber and quartz filter. Experimental data show that the visible radiation detected at implosion initial phase is different from X-ray radiation profile and there is a inflexion in front of the profile peak. The visible radiation is owed significantly to single wire pinch and precursor plasma before implosion stagnation, while the inflexion of the radiation profile is formed because the local magnetic field near the single wire disappears just before the whole implosion.