Abstract
Light scattering and interference patterns are studied in the optical absorption spectra of nuclear fi lters based on polyethylene terephthalate fi lms modifi ed by dry aerosol deposition of silver nano- and microparticles. Surface plasmon polaritons and localized plasmons formed by the passage of light through porous silver fi lms are found to have an effect on the diffraction and interference modes. The thickness of silver nano- and microparticle coatings on the surface of the nuclear fi lters was determined from the shift in the interference patterns in the optical absorption spectra of the modifi ed nuclear fi lters relative to the original nuclear fi lters. A correlation was found between the estimated coating thickness and the average surface roughness of the nuclear fi lters modifi ed by layers of silver nano- and microparticles.
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