EVALUATION OF PYROTECHNIC SMOKE FOR ANTI-INFRARED AND ANTI-LASER ROLES

This paper describes the experimental setup for evaluation of pyrotech nic smoke compositions for anti-laser and anti-infrared roles using th e continuous wave 10.6 mum CO2 laser (4 watt) and presents the results for a few pyrotechnic smoke compositions. The particle sizes of the a erosol from pyrotechnic smoke compositions were also determined using Quartz crystal Microbalance - Cascade Impactor. Two smoke compositions containing hexachloroethane, anthracene/naphthalene, potassium perchl orate and magnesium powder showed more than 97% attenuation of CO2 las er, whereas a composition containing zinc oxide, aluminium, iron oxide along with hexachloroethane was least effective.