Experimental study of transition of Jupiter and Saturn atmosphere to conducting state

The modified equation of state of helium-hydrogen mixtures was used for ID hydrodynamic simulation of performed experiments the multiple shock compression of Jupiter and Saturn model atmospheres. That permitted us to obtain the isentropic compression at third and later steps of compression in pressure region 20-150 GPa. It was shown, that the helium-hydrogen mixtures become conductive due to appearance of hydrogen conductance. The intervals of pressure temperature - density states of these transitions are 30-50 GPa - 4400-5000 K - 0.4-0.5 g/cm(3) for Jupiter and 60-80 GPa - 4600-4800 K - 0.53-0.6 g/cm(3) for Saturn in accordance with our new and previous experiments with pure hydrogen and gas mixtures.