CALCULATION OF ALUMINIUM NANOPARTICLES ABSORPTIVITY AT THE WAVELENGTH OF 690 NM

Abstract

The paper investigates the dependence of aluminium nanoparticles absorptivity (in a vacuum) on the temperature in the range from 300 to 700 K. If the temperature increases, the absorptivity also increases all over the examined range. The dependences of absorptivity maximums and optimal nanoparticles sizes on the temperature were calculated. For each of the nanoparticles radii in the range from 50 to 200 nm the dependence might be described using polynomial of the second degree. The expansion coefficients were calculated. The results of the work are important to enhance the cup of the optical detonator and optoacoustic equipment.

Keywords

• optical properties, linear absorption index, mie theory, absorptivity, aluminum nanoparticles