Diagnostic of the self-healing of metallized polypropylene film by modeling of the broadening emission lines of aluminum emitted by plasma discharge

An analysis, based on the broadenings and shifts of Al atomic lines, of the experimental light spectra obtained describes that the self-healing process leads to generation, from the vaporized metal, of a high-density and relatively weakly ionized aluminum plasma. The plasma density increases with the pressure applied on the film layers following which the density power needed to extend the plasma zone increases as well and the arc discharge goes out faster.