Spectrokinetic Characteristics of Light Emission at the Early Stages of the Laser-Initiated Explosive Decomposition of PETN-Based Composites Containing Metal Nanoparticle Inclusions

Spectrokinetic characteristics of light emission from PETN-based composites containing metal (aluminum, nickel, or iron) nanoparticle inclusions are reported. These characteristics have been measured online using a spectrophotochronograph during the action of a laser pulse (1064 nm, 14 ns). As the PETNbased composites are laser-irradiated, the chemical reaction causing the explosive decomposition of the sample begins during the action of the laser pulse. The observed light emission in the 350-750 nm spectral range can be classified as chemiluminescence.