ON A POSSIBILITY OF EXPLOSIVE MATERIAL EROSION UNDER CONDITIONS OF ITER DISRUPTION EVENT

On the basis of the modeling experiments of hot plasma influence on th e graphite and tungsten materials performed on the GOL-3 device, an an alysis was made of a possibility for explosive erosion to occur under ITER disruption conditions. In this analysis, the threshold value for explosive erosion obtained in the GOL-3 experiments was taken into acc ount. Then the volumetric energy release was calculated for a hot plas ma (T=1-20 keV) reaching the target at the limit of irradiating flux c lose to the conditions of ITER disruption (an energy flux of up to 140 MJ/m(2)). It is shown that under such conditions, erosion can reach v alues much higher than those in the case of erosion under the effect o f a plasma with lower temperature but with the same energy density.