Abstract
The problem of diffraction of the electromagnetic plane wave field on a layered nanoparticle with a metal plasmon layer on the surface of a transparent substrate is considered. Based on the discrete sources method, the influence of spatial nonlocality in a metal on the intensity of the near field and absorption cross section is studied. The cases of particle excitation both by a propagating wave and by a evanescent wave are considered. It is shown that the substrate provides a more significant influence on optical characteristics of the near field than on the intensity in the far zone. It is established that taking into account the nonlocality effect in the metal leads to a significant decrease in the plasmon resonance amplitude with a small shift to the shortwave region.
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