Experimental study on light flash produced by hypervelocity impacting natural dolomite plate

Jet Initiation Model is derived for light flash created by hypervelocity impact and experimental measurements for light flash phenomena of LY12 aluminum projectile hypervelocity impacting natural dolomite target were conducted at the conditions of near impact velocity and projectile incidence angles of 45 and 60 by using an optical pyrometer measurement system and a two-stage light gas gun loading system. Experimental results show that the peak value of the light flash intensity is bigger for projectile incidence angle of 45 than that for projectile incidence angle of 60 during LY12 aluminum projectile hypervelocity impacting natural dolomite plate, at the impacting velocity of 1.86 km/s and 1.96 km/s ,respectively.