Optical fields in nitromethane droplets

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 incidentdash;radiation wavelength. In the present paper, internal optical fields in nitromethane droplets for the CO$_2$ laser wavelength are calculated using the Mie theory. It is shown that for the wavelengths of a chemical laser (2.9 $\mu$m) and a CO$_2$ laser (10.6 $\mu$m), the optical fields in the volume of nitromethane droplets are identical if the droplet sizes do not exceed 10 $\mu$m.