INVESTIGATION OF LIQUID METALLIC WIRE HEATING DYNAMICS

The dynamics of a microsecond electric explosion of a tungsten wire in water is studied. A theoretical search for conditions of liquid wire radial uniformity is given. A new optical methods of temperature and r adius measurements has been worked out. Mathematical modelling has bee n carried out to confirm the existence of radial uniformity and to com pare the results with experimental and theoretical data. Conditions fo r the radial uniformity existence of liquid wire heating are presented ; as tungsten uniform heating takes place at 10(11) A m(-2) < j < 10(1 2) A m(-2), one can use these regimes for investigation of the propert ies of liquid matter. The temperature dependence of liquid tungsten co nductivity is given and compared with literature values. It is shown t hat vaporization begins with surface layers at chosen regimes of elect ric wire explosion.