Diagnostic of jet initiation phenomena

The observation of the radial and axial breakthroughs on cylindrical acceptor charges, symmetrically loaded by a shaped charge jet in the axis at one end surface, allows to measure the build up distance from the side and by the radius of the axial breakthroughs. The selected test set up for the observations in the two planes -- parallel to the acceptor charge axis and prependicular to the charge axis on the end surface and the results, achieved with this diagnostic methods, will be described.