EXPERIMENTAL AND THEORETICAL RESEARCH OF SCATTERING AND ABSORPTION OFLIGHT ON ALUMINUM NANOPARTICLES IN PENTAERYTHRITOL TETRANITRATE

Abstract

Using the integrating sphere, the authors investigated experimentally the dependence of transmission coefficients and the sum of the coefficients of transmission and absorption of light with a wavelength of 643 nm in the pressed samples of pentaerythritol tetranitrate (PETN), containing aluminum nanoinclusions (average radius of 50 nm) of the mass fraction of aluminum nanoparticles. The simulation of the process of absorption and scattering of lightin this system was performedwith the involvement of the Mie theory and radiative transfer equation. It is shown that the distribution of the absorbed energy of approximately obeys the laws of the Bouguer and Beerby the sample depth. The effective value of absorption cross section of metal nanoparticlesradiation, taking into account both the absorption and scattering of light by an ensemble of particles, is greater than the geometric cross section.

Keywords

• laser
• petn
• nanoparticles
• light scattering
• radiative transfer equation
• the mie theory