Optics and Photonics Society of Iran

In this research, plasma spectrum of aluminized RDX explosives compositions were recorded using the laser induced breakdown spectroscopy (LIBS) method under an argon ambient atmosphere. The atomic lines of Al, C, H, N and O and molecular bands of AlO and CN were identified and relative intensities of Al/O were used to plot calibration curve versus stoichiometric ratios of Al/O. By investigation of the dependence of relative intensity of Al/O to detonation velocity and pressure and by plotting the calibration curve with very good regression coefficient, the capability of LIBS method for determining the explosives parameters of RDX/Al unknown samples are well demonstrated. Also, the results of this research indicate that the energy released in the laser induced plasma of aluminized RDX explosives compositions is related to the heat of explosion and percentage of aluminum.