Home – Home – Jornals – Combustion, Explosion and Shock Waves 2002 number 3

In order to determine the heat release in an irradiated particle, it is necessary to know the intensity distributions of internal optical fields in nitromethane. In the droplet volume, the optical field becomes inhomogeneous with increase in the radius of the droplet or with decrease in incident-radiation wavelength. In the present paper, internal optical fields in nitromethane droplets for the CO₂ laser wavelength are calculated using the Mie theory. It is shown that for the wavelengths of a chemical laser (2.9 μm) and a CO₂ laser (10.6 μm), the optical fields in the volume of nitromethane droplets are identical if the droplet sizes do not exceed 10 μm.
Key words: droplets, explosion, optics, fuel, Mie theory, CO₂ laser.