Spectrokinetic characteristics of light emission at the early stages of the laser-initiated explosive decomposition of PETN-based composites containing metal nanoparticle inclusions

Abstract

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.