Process of opacification of a gaseous medium in the optical and infrared bands of the electromagnetic spectrum

摘要

The invention relates to a process for opacifying a gaseous medium transparent to optical and thermal radiation.PPIt is characterized in that it consists in diffusing in the medium, for example the atmosphere, an aerosol such as boron trichloride (BCl.sub.3). P PThe invention applies to the field of electro-optical countermeasures.